A man aged 41 in China's eastern province of Jiangsu has been confirmed to be the first human case of being infected with a rare strain of bird flu, known as H10N3, according to China's National Health Commission (NHC). said on Tuesday.
Many different types of bird flu exist in China and some infect people sporadically, usually people who raise poultry.
There is no indication that H10N3 can spread easily to humans.
The health commission said the man, a resident of Zhenjiang city, was admitted to the hospital on April 18 and was diagnosed with H10N3 on May 28. He did not give details of how the man got infected.
She is now stable and ready to leave. The NHC said investigations of his close contacts did not find any other cases. It added that no other cases of human infection with H10N3 have been reported globally.
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H10N3 is less pathogenic, meaning it causes relatively less severe disease in poultry and is unlikely to be widespread, the NHC said.
The strain "is not a very common virus," said Philip Claes, regional laboratory coordinator for the Food and Agriculture Organization's emergency center for Transboundary Animal Diseases at the Regional Office for Asia and the Pacific.
The man, a resident of the city of Zhenjiang, was hospitalized on April 18 and diagnosed with H10N3 on May 28, the health commission said. It did not give details of how the man was infected.
He is now stable and ready to be discharged. Investigations of his close contacts found no other cases, the NHC said. No other cases of human infection with H10N3 have been reported globally, it added.
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Claes said analysis of the virus's genetic data will be necessary to determine whether it resembles an older virus or if it is a new mixture a resident of the city of Zhenjiang, was hospitalized on April 18 of different viruses.
There have been no significant numbers of human infections with bird flu since the H7N9 strain killed about 300 people during 2016–2017.