Spread of animal diseases threatens Vietnam’s livestock industry March 17, 2023By MBDS Team12 March 2023. As of March 7, Vietnam had detected 68 clusters of ASF in 22 cities and provinces. As for the bird flu, in the year to March 7, the nation had discovered four clusters of the influenza A virus subtype H5N1 (A/H5N1) in four districts of four provinces.