The Rise of the Superbug | Al Jazeera English

Al Jazeera English
19 May 201625:00

Summary

TLDRThis special program investigates the alarming rise of drug-resistant bacteria, or superbugs, which now kill hundreds of thousands annually and could reach 10 million deaths a year by 2050. It explores the causes, from overuse in human medicine and livestock farming to poor sanitation in developing countries, and the urgent need for global action. Innovative solutions like whole genome sequencing and new diagnostic tools are highlighted, alongside the challenges of developing new antibiotics in the face of a broken market.

Takeaways

  • 🌐 The rise of superbugs is a global problem, affecting both human and animal health, with untreatable diseases becoming more prevalent.
  • 💊 Antibiotic resistance is a significant issue in India, where multidrug-resistant cases are common and sanitation challenges contribute to the spread of diseases.
  • 🏥 Inadequate training and qualifications of health providers can exacerbate drug resistance, as incomplete prescriptions can lead to ineffective treatments.
  • 🐔 Antibiotics are extensively used in animal farming, particularly in Kenya, where they are part of the daily diet for chickens, leading to increased resistance in animal populations.
  • 🔬 The Wellcome Trust Sanger Institute is leading research in whole genome sequencing to understand how superbugs evolve and spread, which could help in tracking diseases in real-time.
  • 🌱 The development of new antibiotics is crucial, but the process is slow and expensive, with the last antibiotic being introduced nearly 30 years ago.
  • 🏭 Pharmaceutical companies are hesitant to invest in new antibiotic research due to the high costs and slow returns, necessitating incentives and global cooperation.
  • 🏥 Hospitals are implementing measures to identify and isolate drug-resistant bacteria to prevent the spread of infections, but rapid diagnostics are needed to improve treatment.
  • 🌳 Researchers are exploring natural environments to discover new microorganisms that could lead to the development of new antibiotics, addressing the limited diversity in lab settings.
  • 💰 A proposed fund of up to three billion dollars could incentivize pharmaceutical companies to develop new antibiotics, addressing the lack of new drugs in the market.

Q & A

  • What is the current global impact of superbugs in terms of mortality?

    -Superbugs are currently killing more than a hundred thousand, perhaps as many as a quarter of a million people around the world each year.

  • What could be the potential increase in deaths caused by superbugs by 2050 without action?

    -The number of deaths could grow to as many as 10 million a year by 2050.

  • What is the economic impact of superbugs projected to be over the next thirty-five years?

    -Superbugs are expected to cost the world's economies around a hundred trillion dollars over the next thirty-five years.

  • What is the situation of drug resistance in India, particularly in New Delhi?

    -In New Delhi, most cases seen in clinics are drug-resistant, and multidrug-resistant cases are common, posing a significant challenge for adults to get the right medical treatment.

  • How does the misuse of antibiotics contribute to drug resistance in tuberculosis?

    -Unqualified health providers often write incomplete prescriptions, which can lead to patients not taking the full course of antibiotics, allowing bacteria to mutate and develop resistance.

  • What role does sanitation play in the spread of drug-resistant diseases in communities?

    -Sanitation is a daily challenge in many communities, and poor sanitation can lead to the spread of drug-resistant illnesses through contaminated water and waste.

  • How are superbugs affecting animal health in the United States?

    -In the United States, 80% of the antibiotics sold each year are fed to animals, leading to an increase in superbugs in animal populations and a potential risk of spreading to humans.

  • What is the current state of antibiotic resistance in developing countries according to the International Livestock Research Institute?

    -Scientists at the International Livestock Research Institute have detected a rapid increase in bacterial resistance in developing countries, which is a significant problem affecting public health and livestock health.

  • What is the process of whole genome sequencing and why is it important in understanding superbugs?

    -Whole genome sequencing involves analyzing the entire DNA of a bacterium. It helps researchers understand how closely related different strains are and track how diseases spread, which is crucial in combating the spread of superbugs.

  • What are some of the challenges in developing new antibiotics?

    -Developing new antibiotics is challenging due to the high cost and slow process involved. Additionally, major pharmaceutical companies have largely exhausted the easily cultivable microorganisms in lab settings, limiting the diversity of potential new antibiotics.

  • What is the proposed solution to incentivize pharmaceutical companies to develop new antibiotics?

    -A fund that could payout up to three billion dollars to large pharmaceutical companies that develop new antibiotics has been suggested. This would help mitigate the downside risks for the pharmaceutical industry.

Outlines

00:00

🌐 Global Impact of Superbugs

This paragraph introduces the global issue of drug-resistant bacteria, or superbugs, which are causing a significant rise in untreatable diseases, particularly highlighting the situation in India and Kenya. The script discusses the alarming statistics of superbug-related deaths and the potential economic impact. It also mentions a clinic in New Delhi where a young child has battled drug-resistant typhoid, illustrating the real-life implications of this health crisis. The paragraph sets the stage for a deeper exploration of the causes and consequences of antibiotic resistance.

05:00

🐓 Antibiotic Use in Animal Farming

The second paragraph delves into the role of antibiotic use in animal farming, especially in Kenya, and its contribution to the rise of superbugs. It describes how antibiotics are integrated into the daily diet of animals, leading to the development of resistant bacteria strains. The script also touches upon the potential for these superbugs to spread to humans through the food chain, emphasizing the interconnectedness of animal and human health. The paragraph underscores the urgency of addressing antibiotic overuse in agriculture to prevent further escalation of the problem.

10:03

🧬 The Science of Superbug Resistance

This paragraph focuses on the scientific aspect of superbug resistance, discussing the process of whole genome sequencing and its importance in understanding the evolution and spread of antibiotic-resistant bacteria. It details how researchers at the Wellcome Trust Sanger Institute are using this technology to track and analyze superbugs, including the identification of a healthcare worker who inadvertently reintroduced a resistant strain into a hospital. The summary also touches on the challenges of developing new drugs to combat these resistant strains, given the high costs and slow pace of pharmaceutical research and development.

15:03

🛠️ Innovations in Antibiotic Resistance Testing

The fourth paragraph introduces the viewer to the practical challenges and innovations in testing for antibiotic resistance. It describes the process of antimicrobial sensitivity testing in a lab, using methods such as the disc diffusion test and the e-test to determine the effectiveness of different antibiotics against bacteria. The script also discusses the need for rapid diagnostics to improve the appropriate use of antibiotics and reduce the development of resistance. The paragraph highlights the importance of accurate and quick testing in the fight against superbugs.

20:05

🌿 Exploring New Antibiotic Sources

The final paragraph discusses the challenges and potential solutions in discovering new antibiotics to combat resistant bacteria. It mentions the difficulty of cultivating microorganisms from nature in a lab setting and introduces a new device, the AI chip, which aims to isolate and grow these microorganisms in a more natural environment. The script also addresses the economic barriers to antibiotic development and suggests a global fund to incentivize pharmaceutical companies to invest in new antibiotic research. The paragraph concludes with a call for better diagnostics, reduced antibiotic use in agriculture, and global education on the responsible use of antibiotics.

Mindmap

Keywords

💡Superbugs

Superbugs refer to bacteria that have developed resistance to multiple antibiotics, making them difficult to treat. They are a major theme in the video, as they pose a significant global health threat. The script mentions the rise of superbugs in various contexts, such as untreatable diseases in India and chicken farms in Kenya, highlighting their widespread impact.

💡Antibiotic Resistance

Antibiotic resistance is the ability of bacteria to withstand the effects of antibiotics, rendering these drugs ineffective. This concept is central to the video, as it explains the growing problem of superbugs. The script discusses how drug resistance develops in bacteria and the challenges it poses to healthcare systems worldwide.

💡Multidrug-Resistant

Multidrug-resistant (MDR) refers to bacteria that are resistant to multiple drugs, often making them untreatable with standard antibiotics. The script uses this term to describe cases in India where patients have MDR infections, emphasizing the severity of the drug resistance problem.

💡Sanitation

Sanitation is the hygiene practices and conditions that prevent the spread of diseases. In the video, poor sanitation is highlighted as a factor contributing to the spread of drug-resistant bacteria in communities, particularly in developing countries where infrastructure may be lacking.

💡Antimicrobial Resistance (AMR)

Antimicrobial resistance is a broader term that includes resistance to not only antibiotics but also other antimicrobial drugs. The script uses AMR to discuss the global threat posed by resistant bacteria, including the potential for common infections to become untreatable.

💡Drug-Resistant Tuberculosis

Drug-resistant tuberculosis is a form of TB that is resistant to at least two of the most potent anti-TB drugs. The script mentions this as an example of a serious health issue resulting from drug resistance, highlighting the challenges in treating such diseases.

💡Antibiotics in Livestock

The use of antibiotics in livestock, particularly in chickens, pigs, and cattle, is discussed in the script as a significant contributor to the development of superbugs. The routine feeding of antibiotics to animals can lead to the spread of resistant bacteria, which can then potentially infect humans.

💡Whole Genome Sequencing

Whole genome sequencing is a method used to determine the complete DNA sequence of an organism. In the video, this technology is highlighted as a tool for understanding how superbugs evolve and spread. It is used to track the genetic changes in bacteria that lead to drug resistance.

💡Rapid Diagnostics

Rapid diagnostics refer to quick tests that can identify infections and their antibiotic susceptibility. The script mentions the need for such diagnostics to help in the timely and appropriate use of antibiotics, thereby reducing the development of drug resistance.

💡Insecticide Resistance

Insecticide resistance is the ability of insects, such as mosquitoes, to survive exposure to insecticides. The video discusses this in the context of malaria, where resistance can undermine efforts to control the disease by reducing the effectiveness of insecticides used to kill mosquitoes.

💡New Antibiotics

The development of new antibiotics is crucial to combat the rise of superbugs. The script discusses the challenges in creating new drugs, as well as initiatives to incentivize pharmaceutical companies to invest in this area. The need for new antibiotics is emphasized in light of the increasing prevalence of drug-resistant bacteria.

Highlights

Superbugs are responsible for over 100,000 deaths annually, with a potential to increase to 10 million deaths per year by 2050 without action.

Antibiotic resistance could cost the global economy up to 100 trillion dollars over the next 35 years.

In New Delhi, India, most cases of typhoid are now multidrug-resistant, posing a significant challenge for medical treatment.

Unqualified health providers contributing to drug resistance by issuing incomplete prescriptions.

Poor sanitation in communities can lead to the spread of drug-resistant illnesses.

The misuse of antibiotics in animal farming, particularly in Kenya, is contributing to the rise of superbugs.

80% of antibiotics sold in the United States are used in animal farming, leading to increased superbug infections in animals.

Scientists warn that common infections that are currently easily treated could become untreatable and fatal in the future.

The International Livestock Research Institute has detected a rapid increase in bacterial resistance in developing countries.

Antimicrobial resistance (AMR) is a global threat to public health, requiring immediate action.

England's chief medical officer, Dr. Sally Davies, compares the threat of AMR to terrorism in terms of potential deaths.

Overprescribing of antibiotics by doctors and patient demand contribute to the development of drug resistance.

The developing world is at higher risk due to weaker health systems and over-the-counter availability of antibiotics.

The Wellcome Trust Sanger Institute uses whole genome sequencing to understand how superbugs evolve and spread.

New diagnostic tools are being developed to quickly and accurately identify the right drugs to fight bacterial infections.

The lack of new antibiotics in the market is a significant concern, with the last one introduced almost 30 years ago.

A proposed 3 billion dollar incentive by economist Jim O'Neill aims to encourage pharmaceutical companies to develop new antibiotics.

The development of the AI chip by Dr. Slava Epstein's team allows for the growth of microorganisms in a more natural setting, potentially leading to new antibiotics.

A combination of better diagnostics, reduced antibiotic use in animal farming, and global education campaigns are suggested to combat the superbug threat.

Transcripts

play00:08

in this special program we track the

play00:11

rise of the super bug from a growing

play00:14

caseload of untreatable diseases in

play00:17

India to Kenya's chicken farms where

play00:21

antibiotics are part of the daily diet

play00:22

and the problem inside the lab in the UK

play00:27

with the DNA of superbugs a sequence

play00:30

then tracked

play00:31

we take a look at a tiny device

play00:33

developed in the u.s. that could save

play00:36

millions of lives

play00:41

hello and welcome to the special program

play00:43

looking at the growing global problem of

play00:45

drug-resistant bacteria or superbugs

play00:48

today superbugs killed more than a

play00:50

hundred thousand perhaps as many as

play00:52

quarter of a million people around the

play00:54

world each year and that figure without

play00:56

action could grow to as many as 10

play00:58

million a year by 2015

play01:00

that's more than a killed by cancer in a

play01:03

recent survey done for the UK government

play01:05

that's expected to cost the world's

play01:08

economies around a hundred trillion

play01:10

dollars over the next thirty five years

play01:12

well in a moment we'll look at how that

play01:15

drug resistance develops in bacteria and

play01:18

why the drugs don't work but first Nidhi

play01:20

Dutt visits a clinic and the outskirts

play01:22

of the Indian capital New Delhi where

play01:24

this global health threat is playing out

play01:30

he's just 14 months old but for months

play01:37

Aaron Shibu has been ill he had typhoid

play01:40

and first saw doctor knee total var in

play01:43

January it took two courses of treatment

play01:46

but now finally he has the all-clear

play01:49

since the time you know if we have

play01:52

started our services almost most of the

play01:55

cases that we have had our

play01:57

drug-resistant cases most of them almost

play02:00

all almost all of them have been

play02:02

multidrug-resistant so it is a problem

play02:07

for adults to getting the right medical

play02:10

treatment is a growing challenge of them

play02:15

because the media comes out that I mean

play02:17

Carnival McCutchen I had a fever for a

play02:19

long time and I couldn't eat I took lots

play02:23

of medicine my neighbor even took me to

play02:26

get an x-ray the doctor has an IV I got

play02:34

medicines from one doctor and then

play02:36

another and then another when the first

play02:39

treatment didn't work I went to another

play02:41

for help but then the second doctors

play02:43

treatment didn't help either

play02:44

kaypea it was only when she visited a

play02:48

clinic close to her home that Manorama

play02:51

was found to have drug-resistant

play02:53

tuberculosis dr. Shelley Batra has spent

play02:57

the last 20 years treating difficult TB

play03:00

cases and says more and more drugs are

play03:03

becoming ineffective against the disease

play03:06

she partly blames unqualified health

play03:09

providers they are informal providers

play03:12

all around some of them are not

play03:13

qualified to write a prescription so

play03:16

when they write incomplete prescriptions

play03:18

that is one way patients dead drug

play03:21

resistance so training and upgrading the

play03:23

skills of informal providers is very

play03:26

much required if we want to prevent

play03:27

these disease

play03:30

once a drug-resistant strain of bacteria

play03:32

like typhoid takes hold it is passed on

play03:36

to others in a community through

play03:37

contaminated water and waste sanitation

play03:42

is a daily challenge for people in

play03:44

communities like this and drug-resistant

play03:47

illnesses are a growing threat where the

play03:51

government has failed to fix the problem

play03:53

at its source health workers have tried

play03:55

to compensate by treating the spread of

play03:57

illnesses with a host of medicines while

play04:00

ad hoc treatment has done little to

play04:02

contain harmful bacteria it's raised

play04:05

important questions about the capacity

play04:07

of India's healthcare system to deal

play04:09

with diseases that affect millions of

play04:12

people drug resistance is not just going

play04:15

to lead to a huge number of deaths

play04:18

millions of people are going to die due

play04:20

to causes that could have been treated

play04:24

doctors around the world have long been

play04:26

aware of the potential threat of drug

play04:28

resistance but now with the number of

play04:31

cases on the rise that threat is real

play04:34

they back calls for global action to

play04:37

help stop superbugs and hope it will be

play04:40

enough and won't come too late to

play04:42

protect the health of the next

play04:44

generation

play04:48

when a patient arrives at a hospital

play04:51

like General Hospital here in Qatar and

play04:54

doctors suspect that they have an

play04:56

illness which is drug-resistant all

play04:58

samples are brought to a laboratory like

play05:00

this one it's here that samples are

play05:02

tested against a variety of antibiotics

play05:04

to see if indeed they are drug-resistant

play05:06

to enter see which antibiotic is the

play05:08

most effective overseeing the lab is dr.

play05:11

ibrahim how do you go about testing

play05:13

these antibiotics yes we have here a

play05:17

very highly quality scheme on program

play05:22

for identification and performing

play05:25

antimicrobial sensitivity testing this

play05:27

is a disc which is impregnated with

play05:29

antimicrobial and we look for the zone

play05:33

of inhibition so essentially on this

play05:36

petri dish you have a bacteria living

play05:39

living bacteria and then these spots

play05:41

away you put antibiotics exactly and you

play05:44

can see which ones have killed the

play05:46

bacteria very much in less effect

play05:48

exactly we have a test here called the e

play05:52

test this is a more precise test it tell

play05:56

us how far is sensitive or poor far is

play06:00

resistant

play06:04

we've seen the impact superbugs have on

play06:06

human health but an animal health it's

play06:08

also a massive issue in the United

play06:10

States 80% of the antibiotics sold each

play06:13

year a fed to animals one survey

play06:15

suggested 63,000 tons of antibiotics are

play06:19

fed to chickens pigs and cattle each

play06:21

year as a result superbugs are

play06:23

increasing in animal populations and

play06:26

whether the risk it will spread to human

play06:28

populations it's a term that's been seen

play06:30

in the developing world as well where

play06:32

meat demand is growing fast

play06:34

Malcolm Webb visited a chicken farm on

play06:37

the outskirts of Nairobi in Kenya where

play06:39

antibiotics are part of the daily diet

play06:45

business is booming for Daniel karaoke

play06:47

his chicken farms near Kenya's capital

play06:50

Nairobi and key to his success are

play06:53

antibiotics he puts them in their

play06:55

drinking water every day but the

play06:58

bacteria often become tough and

play06:59

resistant and so then he changes to

play07:02

another drug their claims that that

play07:05

disease become persistent you'll find

play07:07

that you have given the treatment as

play07:09

required but maybe 50% of the bugs have

play07:11

not been cured so what happens you have

play07:14

to change the type of using because that

play07:16

means it's not effective can I get

play07:19

across the chicken and just a few

play07:20

kilometers away in the city right let's

play07:22

make it a half ticket in jail it's

play07:24

takeaways like this where the chickens

play07:26

end up everyday all across the

play07:29

developing world more and more people

play07:30

are eating food like this and not only

play07:32

chicken but also all other kinds of meat

play07:35

and animal products growing populations

play07:37

mean there's more mouths to feed

play07:39

and growing economies mean more and more

play07:41

people can afford food like this in the

play07:43

developed world most countries have

play07:45

already reached their maximum meat

play07:47

consumption but in the world's giants

play07:49

emerging economies like China and Brazil

play07:51

it's been growing for decades and it's

play07:53

expected to grow for decades to come and

play07:56

more meat means more antibiotics that

play08:00

means more bacteria will become

play08:02

resistant scientists say common

play08:04

infections that are easily treated now

play08:06

in the future will become untreatable

play08:08

and fatal and not just in animals but in

play08:11

people too

play08:13

here at the headquarters of the

play08:15

International Livestock Research

play08:17

Institute scientists say they've

play08:19

detected a rapid increase in bacterial

play08:21

resistance in developing countries

play08:23

biologist Timothy Robinson just

play08:25

published a paper on it we're just

play08:27

starting now to gather the magnitude of

play08:30

the problem of antimicrobial resistance

play08:31

developing and it's a problem that

play08:34

affects absolutely everybody in the

play08:35

world everybody is dependent on anti

play08:38

microbials

play08:39

for their public health and and for

play08:42

their livestock's healthy as well and so

play08:45

it's a massive problem that's just going

play08:47

to get worse and worse unless we start

play08:49

to deal with it now

play08:52

food farmers like Daniel can't really

play08:55

deal with this massive problem by

play08:56

themselves keeping his chickens healthy

play08:59

using antibiotics is what keeps his

play09:01

family fed and his children in school in

play09:04

developed countries farmers now use less

play09:06

of the drugs because of regulation and

play09:08

public pressure but farmers in the

play09:10

developing world are going to need help

play09:11

to do the same

play09:17

let's take a look now at how drug

play09:19

resistance develops take a bacteria like

play09:22

e-coli we will have a coli in our gut

play09:24

but some strains of it can cause

play09:26

diarrhea contain it even death now

play09:29

traditionally you would have treated

play09:30

that with penicillin one of the first

play09:33

antibiotics discovered thing is

play09:35

penicillin causes that cell membranes to

play09:38

rupture job done now the problem arises

play09:40

when patients don't take the full course

play09:43

of their antibiotics and Pepsi and Eve

play09:45

antibiotics are of poor quality

play09:46

this gives the bacteria the chance to

play09:48

mutate and develop resistance to the

play09:51

drug if this happens the drugs don't

play09:54

work and the drug-resistant strain of

play09:56

bacteria can fast become dominant last

play10:02

year the World Health Organization said

play10:04

that antimicrobial resistance has

play10:06

reached all parts of the globe it's a

play10:08

threat to public health everywhere and

play10:10

action is required well one of those

play10:13

also calling for action is dr. Sally

play10:15

Davies she's England's chief medical

play10:17

officer now sally you've described a

play10:19

threat of antimicrobial resistance as

play10:21

being as real as terrorism why did you

play10:24

say that well if you think about it

play10:28

terrorists aim to kill people but

play10:31

actually don't kill very many whereas

play10:35

AMR that's the bugs aiming to live and

play10:39

as a result when they infect people they

play10:42

kill the people and they're having great

play10:44

success look at the data in Europe about

play10:47

twenty five thousand deaths a year at a

play10:50

conservative estimate that's more than

play10:52

road traffic accidents it's just edging

play10:54

ahead similar sorts of numbers in the

play10:57

states but I think it's over in the far

play11:01

east that it's even more worrying when

play11:03

you hear about one child under the age

play11:05

of five dying every five minutes of AMR

play11:08

that is to say of infections that we

play11:12

cannot treat with our present

play11:13

antibiotics because the bacteria have

play11:16

grown wise to the antibiotics and are

play11:19

not killed by them

play11:20

it's been reported that half the

play11:22

antibiotics prescribed in the US and

play11:24

2010 were unnecessary they weren't

play11:26

actually necessary for the patient

play11:28

surely doctors need to take some

play11:30

responsibility for prescribing these

play11:32

it's very difficult at the time of

play11:34

prescribing to know what is necessary

play11:36

and what isn't

play11:37

we don't have rapid Diagnostics and

play11:40

that's where in fact quick whole genome

play11:43

scanning might help but we need rapid

play11:47

Diagnostics until we have them what we

play11:49

know is people think the patient has an

play11:52

infection the patient thinks they have

play11:54

an infection so you have to use

play11:56

antibiotics blind

play11:58

that is to say informed guesswork until

play12:01

you have the results of cultures and

play12:04

then you get bad behavior by patients

play12:07

and clinical staff where the patient

play12:11

says I've got a sore throat I must have

play12:13

antibiotics it always goes to my chest

play12:15

I must have antibiotics and the doctor

play12:18

hasn't got the time or the energy to

play12:21

debate this argue it and doesn't want to

play12:23

take the miniscule risk that it might

play12:25

not be viral and gives in I can

play12:28

understand all sides but there is far

play12:31

too much use of antibiotics if you look

play12:34

at prescribing in Britain it's the same

play12:36

in the States so I guess it is all over

play12:38

the world you can see that some areas

play12:40

prescribe double the number of

play12:42

antibiotics as other areas so there must

play12:44

be over prescribing we've seen how

play12:47

devastating the effects of drug

play12:48

resistance can be in a place like India

play12:50

poor communities do you think this poses

play12:53

more of a threat to the underdeveloped

play12:55

world and countries without strong

play12:58

health systems I am very worried about

play13:01

the developing world if you look at the

play13:03

work and the modeling that has been done

play13:07

for the prime minister's independent

play13:08

review on antimicrobial resistance led

play13:11

by The Economist Jim O'Neill you can see

play13:14

that they reckon that if we don't turn

play13:17

the tide on this in 2050 there will be

play13:20

10 million deaths here more than we have

play13:23

dying at the moment of cancer every year

play13:25

and that that will be predominantly in

play13:28

the developing world

play13:29

india-china they will all suffer and it

play13:33

is to do with impart their health

play13:35

systems as you develop health systems

play13:38

you can have stronger mechanisms for

play13:40

ensuring that the drugs are good quality

play13:43

drugs that they're only used when

play13:45

prescribed that they're backed up by

play13:47

laboratory diagnosis and that they are

play13:50

taken for a full course many people in

play13:53

the developed world will do that but in

play13:56

the developing world they'll go and buy

play13:58

some drugs over-the-counter perhaps by

play14:00

one day's amount and then if they feel

play14:03

better they stop other people will buy a

play14:06

handful and they'll share them out

play14:08

around the family and that's assuming

play14:10

they're good drugs rather than

play14:12

counterfeit or falsified which adds to

play14:14

the problem we'll hear more from dr.

play14:20

Sally Davies in a moment but first let's

play14:22

take a look at some of the work being

play14:23

done to better understand how superbugs

play14:25

evolve and how they spread around the

play14:27

world the Wellcome Trust Sanger

play14:29

Institute near Cambridge is a world

play14:31

leader at this and showed Nadine barber

play14:33

some of us recent research you might not

play14:38

realize it but you're looking at a

play14:40

medical revolution when it comes to

play14:42

diseases researchers here at the

play14:44

Wellcome Trust Sanger Institute aren't

play14:46

just interested in what strain of a

play14:48

bacterium is the cause they want to know

play14:50

the entire DNA of the bug

play14:52

they call it whole genome sequencing and

play14:55

these machines are at the heart of it

play14:57

they may look like high-tech

play14:59

refrigerators but these sequences are at

play15:01

the heart of the science that

play15:03

researchers hope will one day allow them

play15:05

to track diseases around the world in

play15:08

real-time Julianne Parkhill heads a team

play15:11

that's developing ways of tracking a

play15:13

whole range of so-called superbugs which

play15:15

had become resistant to antibiotics he

play15:17

likens the approach to creating a family

play15:20

tree of the bacteria so if I take the

play15:22

bacterium from you and a bacterium from

play15:24

me and I take the whole genome sequence

play15:26

of both of them I can say how closely

play15:28

related they are how long ago they

play15:31

shared a common ancestor and therefore

play15:33

how likely it is that you gave that back

play15:35

here

play15:35

me or I gave it to you last year when

play15:38

scientists here were analyzing a

play15:39

previous outbreak of the Mrs a bug in a

play15:42

local hospital

play15:43

medics called to say a baby on a ward

play15:45

now had the infection so we put them in

play15:47

a sequence we put the DNA from this

play15:49

organism to ready on the signaling

play15:50

machines and we identified that it was

play15:52

part of that outbreak there had been a a

play15:55

gap two months with no babies on the

play15:58

ward having M RSA since the outbreak

play16:00

that we were studying for

play16:01

retrospectively and that gap meant that

play16:05

that it couldn't be continuous

play16:07

transmission between babies on the ward

play16:09

and therefore there was likely to be the

play16:12

involvement of health care worker in

play16:16

reintroducing that strain into the ward

play16:18

soon thanks to blood samples from all

play16:21

the hospital staff they identified the

play16:23

worker who'd reinfected the baby unit

play16:25

that person was quickly treated and the

play16:27

outbreak was contained in another part

play16:31

of the Sanger Institute they're working

play16:32

on a mass killer malaria they send the

play16:35

samples here which have been extracted

play16:37

which been taken from a patient's arm

play16:39

blood that's been taken from infected

play16:41

blood researchers are busy analyzing how

play16:44

the Plasmodium parasites that caused the

play16:46

illness in humans are becoming resistant

play16:48

to anti-malarial drugs but they're also

play16:51

trying to discover how the mosquitoes

play16:53

which spread the parasites in the first

play16:55

place become resistant to insecticides

play16:57

to control malaria you won't do two

play17:00

things you want to get rid of the

play17:02

parasites in people who've got parasites

play17:03

particularly if they're ill and you want

play17:05

to stop the mosquitos transmitting

play17:07

malaria and there are various strategies

play17:08

for doing that such as getting people to

play17:11

sleep under insecticide treated bed nets

play17:13

we have to be concerned both about

play17:15

whether we've got effective treatment

play17:16

parasites and whether the bugs are

play17:18

resistant to that equally we have to

play17:20

have effective insecticides to get rid

play17:22

of the mosquitoes and we are worried

play17:23

about insecticide resistance in the

play17:25

mosquitoes malaria affects hundreds of

play17:27

millions of people every year and it's a

play17:29

major cause of death among children in

play17:31

parts of Africa experts are worried that

play17:34

resistance to the frontline treatment

play17:36

artemisinin

play17:37

which has been increasing in Southeast

play17:39

Asia could be repeated in sub-saharan

play17:41

nations the death rate are from malaria

play17:45

is very high or

play17:47

despite the availability of effective

play17:51

drugs it's already high so if the drugs

play17:54

are not working and there is no

play17:56

replacement drug handy then it's going

play17:59

to be a disaster but that disaster need

play18:03

never happened as long as the world can

play18:05

share the lessons from the genetic

play18:06

mutations that they're finding out about

play18:08

here

play18:13

one issue that experts say is

play18:15

compounding the problem is we're not

play18:17

coming up with enough new drugs in fact

play18:19

the last antibiotic to come to market

play18:21

was almost 30 years ago it's simply too

play18:25

expensive and too slow for the major

play18:27

pharmaceutical companies to make the

play18:29

investment that that may be about to

play18:31

change from San Francisco

play18:33

Jake Ward takes a look at some of the

play18:34

research being done to develop new drugs

play18:36

in the United States I'm gonna grab your

play18:39

temperature the United States has a bug

play18:42

problem multi drug-resistant bacteria

play18:45

superbugs that have learned to shrug off

play18:47

the antibiotics we normally use to kill

play18:49

them

play18:50

plague the health system here according

play18:53

to the Centers for Disease Control these

play18:54

bugs infect two million people a year in

play18:57

the United States twenty-three thousand

play19:00

of them die in our society people move

play19:04

between the skilled nursing facilities

play19:07

and their outpatient care doctors and

play19:11

the acute care and around and around and

play19:14

so these organisms can get spread these

play19:17

organisms can live on the skin and they

play19:20

can live on the surfaces of a desk or a

play19:23

bed or a stethoscope the frontline

play19:26

solution is cleanliness constantly

play19:29

washing hands and Hospital facilities

play19:30

but also isolating infected patients at

play19:33

one of Chicago's largest hospitals dr.

play19:36

William trick is trying to automate a

play19:38

process of identifying the bacteria

play19:40

patients carry and quickly communicating

play19:43

that information to the entire

play19:44

healthcare system we can then tell the

play19:46

hospital this is a patient known to have

play19:48

this highly resistant bacteria and they

play19:51

can immediately and appropriately put

play19:53

them on the right precautions to prevent

play19:55

spread to other patient

play19:57

the trouble is that it takes days to

play19:58

identify specifics about the resistant

play20:01

bacteria dr. Lee Riley has just received

play20:04

a multi-million dollar grant to develop

play20:06

a process that would identify the right

play20:08

drugs to fight bacteria in minutes if

play20:11

you can determine what the drug

play20:13

susceptibility that organisms before the

play20:15

patient leaves your office then you can

play20:17

give the right drug and then you don't

play20:19

have to worry about creating drug

play20:20

resistance but dr. Riley says that in

play20:23

many cases maybe even in most cases we

play20:25

are not infected in the hospital instead

play20:28

the bacteria enters our bloodstream

play20:30

during our day to day lives we think

play20:33

that these infections are probably

play20:36

acquired through contaminated food

play20:37

products being exposed to a variety of

play20:41

food products that may be contaminated

play20:43

with bacteria agents that the carry drug

play20:47

resistance genes here in the US and

play20:50

around the world companies simply are

play20:52

not making new antibiotics it's just too

play20:54

expensive and too hard in part that's

play20:57

because they've pretty much tapped out

play20:59

the microorganisms that can be easily

play21:00

cultivated in a lab setting the truth is

play21:03

that there are enough microorganisms in

play21:06

this handful of dirt to pursue countless

play21:09

lines of new possible antibiotics but

play21:12

it's only out here in nature that those

play21:14

microorganisms will thrive as a result

play21:17

researchers are limited to the tiny

play21:19

number of microorganisms that grow in a

play21:22

petri dish microbiologist Slava Epstein

play21:26

realized this was a major problem for

play21:28

researchers that gap is humongous

play21:31

which means a very large amount of

play21:35

microbial diversity on the planet is

play21:37

just not accessible so this is the

play21:40

entire diversity on the planet these dot

play21:45

the red one is how much of that we have

play21:48

cultivated Epstein's team developed a

play21:51

device the AI chip that can isolate

play21:54

cells in dirt to let them grow the way

play21:56

they do in nature it lets nature

play21:58

provides the necessary component for

play22:01

growth and then the cell growth in form

play22:03

a colony and once it forms a colony we

play22:05

can explore this colony on its ability

play22:07

to producing UNG bear

play22:08

the hope is that a new crop of

play22:10

antibiotics used on bacteria that have

play22:12

been quickly and specifically identified

play22:14

could slow deadly infections around the

play22:17

world infections that our food and our

play22:20

hospitals seem to have helped create in

play22:25

my report prepared for the UK government

play22:28

suggested the creation of the fund that

play22:30

could payout up to three billion dollars

play22:32

to large pharmaceutical companies that

play22:34

develop new antibiotics economists Jim

play22:37

O'Neill was the author of that report

play22:40

takes the downside risks away for the

play22:44

pharmaceutical industry to undertake

play22:47

these kind of risks which from a world

play22:51

I've lived in of risk versus reward

play22:53

I would have thought that seemed like a

play22:55

pretty important attraction we're

play22:58

pursuing lots of other important paths

play23:00

and in particular wonder in my growing

play23:03

judgement is perhaps the most important

play23:05

which is the demand side of the problem

play23:08

and we all stop wanting to use

play23:10

antibiotics as though they're Suites and

play23:12

put pressure on our food companies to

play23:17

stop using them for feeding animals so

play23:20

better Diagnostics less if not no use of

play23:26

antibiotics for fattening up animals and

play23:30

probably a major education campaign

play23:34

specific to different parts of the world

play23:36

to just let people know that just taking

play23:40

antibiotics isn't necessarily a good

play23:43

thing to do well I want to come back now

play23:45

to dr. Sally Davies England's chief

play23:47

medical officer do you think a three

play23:49

billion dollar incentive is enough to

play23:51

get the interest of pharmaceutical

play23:53

companies well I don't know whether that

play23:56

is absolutely the answer Jim O'Neill

play23:58

who's been asked to do this work as an

play24:01

independent economist is going round

play24:04

with his views discussing with

play24:05

governments to try and get a global view

play24:07

because if that's the right answer and

play24:09

it may well be then we've got to get a

play24:12

lot of governments subscribing to it but

play24:14

what I do know is the present systems

play24:16

broke no new antibiotics marketed that

play24:20

would discovered

play24:22

after 1987 we have passed the golden age

play24:25

and it's a very difficult area it's

play24:28

difficult science and the world has

play24:31

disinvested in the scientists who do

play24:33

that sort of work

play24:34

so either Jim O'Neal's solution or

play24:36

another I don't mind as long as we get

play24:39

the solution move forward to start

play24:41

developing and then delivering new drugs

play24:44

that's all we have time for in this

play24:46

special program there's plenty more on

play24:48

superbugs and what's being done to

play24:50

address the global threat on our website

play24:52

at aljazeera.com thanks for watching

play24:55

goodbye

Rate This

5.0 / 5 (0 votes)

相关标签
SuperbugsAntibiotic ResistanceHealth CrisisMedical InnovationGlobal ThreatDrug DevelopmentIndiaKenyaUKUSAMalariaFood Safety
您是否需要英文摘要?