Vietnam's Ministry of Health confirmed four more A/H1N1 flu cases in the country, raising total number of flu patients to 56, local newspaper the People reported on Wednesday.

Among the four newly-detected cases, one patient is a 33-year-old man coming back from Thailand on the flight TG686 on Saturday. He is the husband of a 24-year-old patient confirmed positive to the A/H1N1 virus previously, said the newspaper.

Two other patients are two siblings, a 15-year-old girl and a 14-year-old boy. They returned to Vietnam from the United States on Thursday. Another patient is a 17-year-old girl, according to the report.

Amid rising flu cases in the country, Vietnam's Ministry of Health urged people to limit their travel to infected areas, said the newspaper.

(Xinhua News Agency June 24, 2009)