Tuesday, August 30, 2011

There are no vaccines against new variants of H5N1

31/08/2011 2:23


From here last year will not keep up production of vaccines against new variants of the virus causing avian influenza H5N1 (H5N1 - 2.3.2.1) and thus the U.S. needs to focus maximum resources to minimize the risk infection from the movement of poultry, especially in border provinces.
It is the opinion of the Office of the UN Food and Agriculture organization (FAO) in Vietnam.
Youth has an interview with Mr. John Weaver, Chief Advisor of the FAO office in Vietnam on the issue.


Advisor of the Office of FAO John Weaver








Biggest concern for the H5N1 virus-2.3.2.1 What, sir?

That means the vaccine is not strong enough to resist the new viruses.
The reason is that the antigens of the new virus has changed - literally as antibodies produced by the vaccine is no longer able to recognize the "face" of the new virus.

How long to make a vaccine against the new virus?

Using the methods of modern molecular manipulation will help the rapid development of new vaccines appropriate. However, the production and testing of vaccines need a certain time period.
I'm afraid to go to next year we can use this new vaccine.

What are the main sources of infection and need to do to reduce this risk?
The preventive measures should focus on limiting the maximum virus spread to both poultry and humans. The path to the virus can spread from bird to bird.
Fertilizer, feathers, the transportation and clothing as well as the way to spread viruses.

"The preventive measures should focus on limiting the maximum virus spread to both poultry and humans"
Ducks, chickens and risk is the main source of infection. It is remarkable when infected, they do not have the clinical manifestations and therefore could not be detected. The key when dealing with bird flu in Vietnam is the lack of hygiene and biosecurity on farms, from the purchase of poultry at markets, as well as the slaughterhouses.
Need to promote improved processing and trade of poultry.

He recommends that those people directly involved in the process of breeding, slaughter and movement of poultry?

Absolutely isolated birds are breeding with people living in the same area. Upon entering the poultry sector, needs to be replaced immediately shoes, wear protective clothing and hand washing. Not for the purchase of poultry breeding areas into it. No delivery conducted in animal feed and poultry sector. Buy only the native birds and clear origin and separated them in two weeks to ensure they are completely healthy.
Report immediately to authorities when birds died or have signs of abnormal health.

For buyers of poultry at markets and slaughterhouses, always wash your body and spray disinfectant.


Mr. Van Register - Head of Epidemiology (Department of Animal Health, MARD) - 8.30 pm for the flu virus in poultry in northern provinces has variations. Phu Tho has found the H5N1 virus - 2.3.2 branch B (FAO called H5N1 virus - 2.3.2.1), the virus appeared in Vietnam. Previously, scientists had identified the virus in poultry in the north. According to States, the new virus has been identified as highly virulent than the virus before.
The Veterinary Department is to test the ability of antibodies of the vaccine produced by the U.S., if the meet will be used for mass vaccination.

Quang Duan




Vietnam has not recorded a variant of the H5N1 influenza virus in humans

Prior information about the bird flu virus H5N1 mutating, Wednesday 30/08, Deputy Health Minister Trinh Quan Huan said repeatedly over the years, scientists in the country is the study of the variability of this virus but have not been convincing evidence that the H5N1 virus in humans has been transformed into a new strain.

At this point, the U.S. had not received official information from the World Health Organization confirmed the H5N1 influenza virus in humans in Vietnam has changed.


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