A Chinese-American has publicly apologized to two women that he unwittingly gave the A(H1N1) influenza virus in Guangdong province.

The man surnamed Li, 28, was discharged from hospital on Tuesday night amid criticism that he was irresponsible when he developed flu symptoms.

The apology came as a man and a woman were both confirmed as infected with the virus - bringing the number of cases on the Chinese mainland to 51.