Vietnam's Ministry of Health confirmed 31 more cases of A/H1N1 influenza, raising the total number of flu patients in the country to 794, the local newspaper the People's Army reported Friday.

Among the 31 cases, nine patients were detected in the south, 12 in the north, ten in the central highland provinces, said the ministry.

The A/H1N1 virus has been spreading fast in Vietnam nationwide, especially in public buildings including offices and schools.

Two large office buildings in Hanoi, the capital city of Vietnam, and one office building in Ho Chi Minh City, have reported A/H1N1 flu cases, said the ministry.

So far, 450 patients have recovered and been discharged from hospitals. The rest are being quarantined and treated, said the newspaper.

No A/H1N1 related death has been reported in the country since the first case confirmed here.

(Xinhua News Agency July 31, 2009)