Vietnam, the country worst hit by bird flu, will send soldiers and police to help contain the spread of the virus as more outbreaks erupt and the sudden death of ducks in two provinces hints at a more virulent strain.
[...] The urgency was reinforced by Veterinary Institute head Truong Van Dung, who told a government meeting that bird flu may have become more virulent.
He cited the death within three to four hours of a flock of ducks in Bac Giang province. Even though none showed symptoms of the virus while alive, all 15 samples taken after their deaths were positive for the H5N1 strain of bird flu.
Dung could not be reached for further comment and there was no proof that H5N1 had become more virulent, but many ducks also died quickly in a field in Hai Duong province, the Nong Nghiep Vietnam newspaper said.