Taiwan reports H9N2 avian influenza on poultry farm


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Taiwan’s Centers for Disease Control and Prevention reported Friday the detection of H9N2 bird flu in a home poultry farm. This is the first time this virus subtype has been detected in a poultry farm in the country.

Photo/Robert Herrmann

The CDC indicated that for domestic poultry farms where the H9N2 virus subtype was detected, the health unit assisted workers with culling and disinfection of farms to help them put on and take off their personal protective equipment, and compiled a list and conducted health checks as soon as possible. Prevention and control measures such as case tracing. Currently, there are 20 contact prevention and control employees and 1 poultry farm worker. There are 21 people in total, and none of them are showing flu-like symptoms. In addition, for domestic avian influenza epidemic contacts, since January this year (2023), a total of 695 people (47 cases belong to 47 cases) related contacts have been included in the health management tracing, and there is no human. New cases of influenza A type have been found.

The Centers for Disease Control and Prevention reports that since 2013, sporadic human cases of H9N2 infection have been consistently reported internationally. To date, at least 97 cases have been reported, of which more than 7 have become young children. There are 8 serious cases and 2 deaths (all with a history of chronic diseases). In Asia, nearly 90% of cases have occurred in China. The latest case was a mild case in Hunan Province, China in November 2022. According to the WHO H9N2 risk assessment on February 24, 2023, most of the current cases were exposed to poultry or polluted environments. As the virus continues to circulate in poultry, sporadic human cases are expected to persist, but current evidence shows that it has not been transmitted from person to person (human to human), and the possibility of community transmission is low, but episodic. Human cases of infection may occur, and close monitoring is required. H9N2 is currently a new subtype of influenza A type with “low” disease severity in humans.

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The Department of Disease Control and Prevention states that because household poultry epidemics continue to occur, respiratory secretions and secretions from poultry infected with avian influenza may contain viruses. Upon entering the human body, the risk of human exposure to infection increases, and workers associated with livestock are urged to wear personal protective equipment while working. In order to prevent new influenza A type, clinicians are urged to ask TOCC (travel history, occupation history, contact history and group history) of patients with influenza-like illness. If they meet the notification requirements for new type A influenza, they should report as soon as possible. In addition, the public is asked to adhere to the principle of “5 tips and 6 do’s”. “5 doses”: meat and eggs should be cooked, wash hands thoroughly with soap, if symptoms appear, wear a mask to see a doctor immediately and inform the profession and contact history, those who have long-term contact with poultry and livestock influenza vaccination, a balanced diet, exercise regularly correct ; Do not eat raw poultry eggs or poultry products, do not run away or buy meat from unknown sources, do not touch or feed poultry, do not release or dispose of poultry at will, do not mix livestock with other livestock, do not go to Poorly ventilated or crowded places.

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