Haplorchis pumilio and H. taichui in Vietnam discriminated using ITS-2 DNA sequence data from adults and larvae.

Samples of Haplorchis taichui and Haplorchis pumilio of different life-stages (cercariae, metacercariae and adults) and from different host species (snail, fish, dog, cat and human) were collected in Nghe An and Nam Dinh Provinces in Vietnam. Samples from Thailand were available for comparison. All adults and metacercariae were initially identified using morphological criteria.

Preliminary analysis of tetracycline residues in marketed pork in Hanoi, Vietnam.

A cross-sectional survey was designed to investigate the proportion of tetracycline residues in marketed pork in suburb and urban districts in Hanoi. A total of 290 raw muscle samples were randomly collected from open markets in these districts. The samples were qualitatively screened for tetracycline residues using the agar inhibition test, and Bacillus cereus (ATCC 11778) as the reference strain.

On the evolution and molecular epidemiology of the potyvirus Papaya ringspot virus.

The potyvirus Papaya ringspot virus (PRSV) is found throughout the tropics and subtropics. Its P biotype is a devastating pathogen of papaya crops and its W biotype of cucurbits. PRSV-P is thought to arise by mutation from PRSV-W.