China’s National Health Commission (NHC) confirmed on Tuesday the first human case of infection with the H10N3 strain of bird flu, for a 41-year-old man in China’s eastern province of Jiangsu.

The man, a resident of the city of Zhenjiang, was hospitalized on April 28 after developing a fever and other symptoms, the NHC said in a statement.

He was diagnosed as having the H10N3 avian influenza virus on May 28, it said, but did not give details on how the man had been infected with the virus.

H10N3 is a low pathogenic, or relatively less severe, strain of the virus in poultry and the risk of it spreading on a large scale was very low, the NHC added.

Many different strains of avian influenza are present in China and some sporadically infect people, usually those working with poultry. There have been no significant numbers of human infections with bird flu since the H7N9 strain killed around 300 people during 2016-2017.