On the 19th, the Guangdong Provincial Center for Disease Control and Prevention reported that in January 2017, the genes isolated from two cases of human H7N9 infection were analyzed by gene sequencing, and it was found that the location of the hemagglutinin link peptides of the two viruses occurred. Gene insertion mutations. At present, the test results are reviewed and confirmed by the National Influenza Center of the National Institute of Viral Diseases, Chinese Center for Disease Control and Prevention. The laboratories in the agricultural sector also found similar variants of the virus in 4 poultry specimens from Guangdong. This result has been notified to the World Health Organization.
Science and Technology Daily reporters connected to the relevant person in charge of the Guangdong Provincial Center for Disease Control and Control learned that from the analysis results, this result has little effect on the prevention and control of human infection with H7N9.
Li Junhong, head of the emergency department at Beijing You'an Hospital, Capital Medical University, also believes that the virus mutation is not a bad thing for human beings.
"The H7N9 is often low pathogenic in poultry and highly pathogenic in humans. The virus variants found this time, show that it is also highly pathogenic to birds." Li Junhong said that according to the H7N9 high pathogenicity theory, if Viral variants are prevalent and are very helpful for the early culling of birds in the outbreak. “Also, it can be seen from the briefing that both cases had a history of bird exposure before the onset of the disease. At present, one case has been cured and the other case is still being treated. This shows that even if the virus mutates, it will not affect humans. There have been too many changes."
"Whether it is theoretical or practical, the H7N9 bird flu currently has neither the possibility of a pandemic nor the exact evidence to confirm the spread of human intercourse." Li Junhong said that although it is not ruled out that H7N9 may transmit from person to person, it is currently In the case of two family clustered cases, it is impossible to rule out the possibility that the infected individuals may be exposed to the virus live poultry environment in common or in succession, as well as the high-risk environment in which the virus is contaminated.
The National Health and Family Planning Commission also said that there is currently no clear evidence that the existing prevention and control measures need to be upgraded. Nationwide, the monitoring of the population of H7N9 virus is still in patients with severe pneumonia and influenza-like patients.
Since no vaccine has yet been available for human infection with H7N9 avian influenza, Li Junhong repeatedly reminded that influenza vaccination has a clear preventive effect, especially for the middle-aged and elderly people who should avoid contact with live poultry and eat uncooked poultry. Once you have a fever, be sure to go to the hospital promptly. (Source: Science and Technology Daily)
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