A feverish woman who were isolated at Singapore's Communicable Disease Center (CDC) following a recent trip to Vietnam has been cleared of avian flu.

The 38-year-old Vietnamese woman, who married to a Singaporean, has tested negative for the H5N1 virus, which causes avian flu, Channel NewsAsia reported on Sunday.

The woman, who complained of fever and giddiness, went to a clinic near her home on Saturday and was finally transferred to the CDC as a precautionary measure because she had traveled to Vietnam recently.

No bird flu case has now been reported in Singapore, but as part of its 100 million Singapore dollars (about 59 million US dollars) plan against a possible bird flu outbreak, the city state 's Health Ministry has asked family doctors to be vigilant for patients with suspected bird flu.

Source: Xinhua