Singapore's Health Ministry confirmed on Sunday the country's fifth Influenza A/H1N1 case.

The Health Ministry said on its official website the patient is a 22-year-old Singaporean female who has a travel history to the United States from May 13 to 28. She returned to Singapore from New York via Tokyo on All Nippon Airways NH901 on Friday night, and developed a fever Saturday.

The ministry said that the patient has been admitted to local hospital and her symptoms are mild and she is in stable condition.

Singapore confirmed its first case of Influenza A/H1N1 on Wednesday, and three more cases on Thursday.

The ministry said that the last four patients have relatively mild symptoms and are doing well, and are expected to recover uneventfully.

(Xinhua News Agency May 31, 2009)