U.S. researchers announce that anti-influenza vaccine is ineffective

For the first time in the world, the laboratory has verified that US researchers announced this morning -

Anti-Influenza Vaccine is ineffective

According to news from Xinhua News Agency, U.S. researchers announced this morning that after clinical verification, the traditional seasonal influenza Vaccines that are applicable at this stage have no effect on the prevention of the global pandemic H1N1 influenza virus, which is the first time in the world to undergo experiments The laboratory verified that the H1N1 influenza A virus has the ability to resist existing vaccines.

Traditional Vaccine proved ineffective

The study on the ability of the H1N1 influenza virus vaccine to be carried out jointly by the US Centers for Disease Control and Prevention, the Food and Drug Administration, the National Institute of Allergy and Infectious Diseases, and various institutions and vaccine manufacturers shows that it is widely available in various countries. The "current seasonal influenza vaccine" used does not have an epidemic effect on the H1N1 influenza virus.

The report released on the 21st said: At this stage, the seasonal influenza vaccine contains three major strains of influenza virus, namely H1N1, H3N2 and influenza B virus. Therefore, the seasonal influenza vaccine at this stage can provide protection against these three types of influenza. Ability, but it has no effect on the H1N1 influenza virus.

The study was based on blood samples from people who had been recently vaccinated with seasonal influenza vaccine. The results showed that the vaccine in children did not show any resistance to the H1N1 virus and exhibited the weakest resistance.

Duffy is also a non-preventive medicine

Until the vaccine has been developed, scientists have said that Tamiflu-like effects can treat the new influenza virus. However, scientists also pointed out that the extensive use of Tamiflu to prevent the spread of this virus is not a good strategy.

As the country with the most serious cases of the European H1N1 virus infection in Europe, the “antiviral drug strategy” recently adopted by the UK has been criticized by some influenza researchers. "Using Tamiflu to adopt a containment strategy for the new influenza virus is problematic," said American State of Minnesota influenza virus Osterholm on the 21st. "Don't try to use drugs to control the spread of the virus because the specific drugs are not vaccines." There is no special effect on the control of the development of the epidemic.

Expert interpretation

The prevention situation is more severe

Professor Liu Qingquan, a member of the Influenza A expert group and director of the Emergency Department of Dongzhimen Hospital Affiliated to Beijing University of Traditional Chinese Medicine, said in an interview with reporters this morning that he also noted that the United States has no effect on the prevention of H1N1 flu by the seasonal Flu Vaccine. Reported.

Professor Liu said that this conclusion means that the current prevention situation is more severe than before. Because the old flu vaccine does not work, and the new vaccine is just at the start of research, people can't rely on the vaccine to prevent and treat the H1N1 flu. Instead, they need to turn to other directions, such as how to cut off the source of infection and how to protect healthy people. Not infected, etc.

Professor Liu said that, in general, the development of vaccines takes 3-6 months, but this does not mean that the vaccine is finally hope. First of all, it is very likely that the virus has already mutated after the vaccine was developed; at the same time, whether the newly developed vaccine can overcome the virus needs to be tested.

Professor Liu said that China is also stepping up efforts to carry out vaccine research activities, but there are also many difficulties. Although we have acquired the virus strain, the number is relatively small.

"Fears come from not understanding the virus"

From the perspective of the disease, it can be found that the influenza A is not so terrible, what causes the people of all countries to panic?

Dr. Gaya, a WHO expert, told this reporter that seasonal epidemics occur every year. Medical institutions are able to use seasonal vaccines for the treatment of the virus. This time is different! Influenza A is an emerging virus and people do not have any immunity to this virus. The current concern is mainly because we do not have a thorough understanding of the virus and do not know how the future situation will develop. "As soon as the H1N1 influenza virus is excreted, its infectivity can only be maintained for 2 to 8 hours. Therefore, we should not be afraid, but be careful!" Gaya advises everyone not to panic, as long as adhere to handwashing, disinfection, and avoid touching the mouth Keeping your nose and nose and minimizing your stay in public places can effectively prevent the spread of the virus. (Reporter Wang Yan Tao Yunxi)