Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Drug-resistant tuberculosis rife in China

11.12.2008
Levels of drug-resistant tuberculosis (TB) in China are nearly twice the global average. Nationwide research published in the open access journal BMC Infectious Diseases has shown that almost 10% of Chinese TB cases are resistant to the most effective first-line drugs.

Susan van den Hof, from the KNCV Tuberculosis Foundation in The Netherlands is one of the authors on a Chinese study into the prevalence of multi-drug resistant tuberculosis (MDR-TB). She said, “In order to obtain insight into the prevalence and distribution of resistance, China has joined the global project on anti-tuberculosis drug resistance surveillance, and investigated drug resistance in ten provinces between 1996 and 2004.”

China has the second largest number of TB cases in the world, and is one of the countries with high levels of drug-resistant TB. According to the authors, “The prevalence of drug resistance varied greatly between the provinces, but on average was worryingly high, with a weighted mean for MDR-TB of 9.3% among all cases; 5.4% among new cases and 25.6% among previously treated cases. The global MDR-TB estimates are 4.8% for all cases, 3.1% for new cases and 19.3% for previously treated cases.”

Treatment of MDR-TB requires use of costly, toxic and less effective second-line drugs and infected patients are less likely to survive treatment. In a well-functioning TB control program with low levels of defaulting from treatment, high resistance levels are expected among previously treated cases. This is consistent with the authors' observations in China. If a good TB control program is in place, the proportion of previously treated patients among all TB patients should also be low. In China the proportion of previously treated patients varied between the provinces but on average was about 20%, compared to a global average of 11%.

The authors said, “Many possible explanations for the development of drug resistance in China exist, and different explanations may prevail in different areas of this vast country. These include the inadequate use of anti-TB drugs in public hospitals, lack of supervision of treatment, poor drug-management and absence of infection control measures in hospitals. Also, availability of anti-TB drugs without a prescription in some areas of China in the past may have contributed to the development of drug resistance.”

At this moment, programmatic treatment of MDR-TB cases with second-line drugs is being piloted in some areas of China. MDR-TB treatment will then be expanded within China to prevent further spread of MDR-TB and help to bring MDR-TB rates down.

Graeme Baldwin | alfa
Further information:
http://www.biomedcentral.com/bmcinfectdis/
http://www.biomedcentral.com

All articles from Health and Medicine >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Regensburg physicists watch electron transfer in a single molecule

For the first time, an international team of scientists based in Regensburg, Germany, has recorded the orbitals of single molecules in different charge states in a novel type of microscopy. The research findings are published under the title “Mapping orbital changes upon electron transfer with tunneling microscopy on insulators” in the prestigious journal “Nature”.

The building blocks of matter surrounding us are atoms and molecules. The properties of that matter, however, are often not set by these building blocks...

Im Focus: University of Konstanz gains new insights into the recent development of the human immune system

Scientists at the University of Konstanz identify fierce competition between the human immune system and bacterial pathogens

Cell biologists from the University of Konstanz shed light on a recent evolutionary process in the human immune system and publish their findings in the...

Im Focus: Transformation through Light

Laser physicists have taken snapshots of carbon molecules C₆₀ showing how they transform in intense infrared light

When carbon molecules C₆₀ are exposed to an intense infrared light, they change their ball-like structure to a more elongated version. This has now been...

Im Focus: Famous “sandpile model” shown to move like a traveling sand dune

Researchers at IST Austria find new property of important physical model. Results published in PNAS

The so-called Abelian sandpile model has been studied by scientists for more than 30 years to better understand a physical phenomenon called self-organized...

Im Focus: Cryo-force spectroscopy reveals the mechanical properties of DNA components

Physicists from the University of Basel have developed a new method to examine the elasticity and binding properties of DNA molecules on a surface at extremely low temperatures. With a combination of cryo-force spectroscopy and computer simulations, they were able to show that DNA molecules behave like a chain of small coil springs. The researchers reported their findings in Nature Communications.

DNA is not only a popular research topic because it contains the blueprint for life – it can also be used to produce tiny components for technical applications.

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Global Legal Hackathon at HAW Hamburg

11.02.2019 | Event News

The world of quantum chemistry meets in Heidelberg

30.01.2019 | Event News

Our digital society in 2040

16.01.2019 | Event News

 
Latest News

Gravitational waves will settle cosmic conundrum

15.02.2019 | Physics and Astronomy

Spintronics by 'straintronics'

15.02.2019 | Physics and Astronomy

Platinum nanoparticles for selective treatment of liver cancer cells

15.02.2019 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>