This document discusses the current status of important transboundary animal diseases in Vietnam. It notes that foot-and-mouth disease (FMD), highly pathogenic avian influenza (HPAI), and porcine reproductive and respiratory syndrome (PRRS) are the most prevalent and cause significant economic losses. FMD was first recorded in 1885 and outbreaks occur almost yearly. PRRS was first detected in 2000 but did not cause outbreaks until 2007, and three genotypes are present. HPAI outbreaks due to H5N1 were first recorded in 2003 and have occurred in three waves with evolving clades, complicating the situation. Control measures and vaccine development from local isolates are discussed to address these diseases of concern.

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CURRENT STATUS OF IMPORTANT TRANSBOUNDARY ANIMAL
DISEASES IN VIETNAM
Viet Khong Nguyen
Associate Professor
National Institute of Veterinary Research
86 Truong Chinh, Dong Da, Hanoi, Vietnam
Email: nguyenvietkhong@yahoo.com
ABSTRACT
In Vietnam, as far as the figures of transboundary animal diseases are concerned, the Food and Mouth
disease (FMD), the poultry highly pathogenic Avian influenza (HPAI), the porcine reproductive and
respiratory syndrome (PRRS) are considered the most prevalent and are causing devastating economic
losses in this country. The FMD was first recorded in Vietnam in 1885 and the serotype O was
predominantly recorded (with different sub-serotypes), which caused a wave of outbreaks periodically
every 2-3 years. The serotype A and serotype Asia 1 emerged in 2003 and 2005 respectively. Currently, at
least 3 sub-serotype O, 2 sub-serotype A and 2 sub-serotype Asia 1 have been identified in Vietnam,
Outbreaks occur almost every year. On the other hand, the PRRS was first recorded in 2000 as sero-
positive but no outbreak occurred till 2007. Three different genotypes are illustrated as coexisting and
circulating in Vietnam. The HPAI outbreak was due to H5N1, which was first recorded in 2003. The three
main waves of outbreaks which were followed by the epidemic situation (with evolution of different
clades) made it more complex. Relevant control measures as well as the development of vaccines from the
local isolates are discussed. Besides, the situation of such important zoonosis such as rabies, trichinella
is conveyed intentionally toward collaboration.
Keywords: Transboundary animal diseases,food-and-mouth disease (FMD), PRRS, avian influenza, Vietnam