Three new cases of human infection with avian influenza A(H9N2) virus were reported from China, according to the World Health Organization.
The first case is a 4-yearold male from Guangxi Province, with symptom onset on 26 June 2026. The second case is a 4-year-old male from Jiangsu Province, with symptom onset on 22 June 2026. The third case is a 44-year-old male from Guangdong Province, with symptom onset on 26 June 2026. All three cases had exposure to live poultry.
The first and second cases had mild symptoms and now recovered; the third case had underlying comorbidities and is curently receiving treatment in the intensive care unit.
Since 2015, a total of 173 cases of human infection with avian influenza A(H9N2), including two deaths (both with underlying conditions), have been reported to WHO in the Western Pacific Region. Of these, 170 were reported from China, two were from Cambodia, and one was from Viet Nam.
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Avian influenza, commonly known as bird flu, is a viral infection that primarily affects birds. Among the various subtypes, the H9N2 avian influenza virus has gained attention due to its ability to infect a wide range of bird species and occasional transmission to humans.
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In poultry, H9N2 infections can range from asymptomatic to severe, depending on various factors such as the bird species, age, and the presence of other pathogens. Common symptoms in birds include respiratory distress, reduced egg production, and a drop in feed consumption.
In humans, symptoms are similar to those of other influenza viruses and may include fever, cough, sore throat, and difficulty breathing.