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| For the first time in the world, human infection with H5N8 subtype avian influenza has been discovered. According to Anna Popova, Director of the Russian Federation’s Consumer Rights Protection and Public Welfare Supervision Agency, on the 20th, 7 farm employees were found to be infected with the H5N8 avian influenza virus. What are the main ways of human infection with H5N8? How to avoid infection in breeding and life? At present, what countermeasures does my country have to prevent? On February 22, a reporter from Science and Technology Daily interviewed relevant domestic experts. H5N8 subtype strains may have certain antigenic differences H5N8 subtype strains may have certain antigenic differencesHow to take a scientific look at the world's first discovery of human infection with H5N8 subtype avian influenza virus? Professor Peng Daxin from the School of Veterinary Medicine of Yangzhou University, who has been engaged in the prevention and treatment of avian influenza for many years, told reporters that avian influenza viruses can be divided into different subtypes according to hemagglutinin (HA) and neuraminidase (NA). Before 2010, the H5N1 subtype of avian influenza virus was dominated. "The poultry cases reported in our country in recent years are mostly H5N6 subtype avian influenza. According to Peng Daxin, according to the World Organisation for Animal Health, between 2003 and 2020, a total of 862 people were infected with the H5N1 subtype avian influenza virus, 455 people died, and the mortality rate reached 52. "Fortunately, the current H5 subtype avian influenza virus infection in humans is caused by contact between humans and infected poultry or pollutants. In Peng Daxin's view, the H5N8 subtype avian influenza virus may spread through the migration routes of wild birds. No signs of this subtype virus circulating in poultry have been found in my country No signs of this subtype virus circulating in poultry have been found in my country"But in my country, the infection rate of this subtype virus in poultry and wild birds is very low. Peng Daxin believes that although no signs of transmission of this subtype virus in poultry have been found, it is still necessary to increase vigilance to prevent the risk of transmission to poultry through wild birds. Peng Daxin also told reporters that the H7N9 avian influenza vaccine approved for use in poultry in our country in 2017 has successfully prevented the sixth wave of human infection of this type of virus. There may be some antigenic differences between the H5 subtype avian influenza vaccine currently used in poultry in my country and the currently circulating H5N8 subtype strains. Good hygiene can effectively reduce the risk of infection. For the people, they should reduce contact with live poultry, avoid contact with wild poultry that died of disease, avoid eating uncooked poultry meat, wash their hands frequently, maintain a healthy diet and good living habits in their daily lives. For farm employees, it is necessary to strengthen the concept of biosafety, and take necessary precautions when handling sick and dead poultry, such as wearing masks, gloves, and taking a series of disinfection measures, and vaccinate seasonal flu vaccines when necessary to prevent seasonal flu vaccines.
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