Key result
Porcine serum samples in Japan show ~50% positivity for hemagglutinating encephalomyelitis virus, indicating widespread infection.
Why the study?
The prevalence and distribution of hemagglutinating encephalomyelitis virus infection in pigs across Japan were not well characterized.
Design
Serological cross-sectional survey
Authors
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Supports targeted surveillance in Japanese swine herds; leaves open prospective assessment of clinical and economic impact.
Cross-Sectional (n=6,797)
Yes
HEV infection is widespread among pigs in Japan, with antibody prevalence increasing with age.
Hirai et al. (1974) conducted a cross-sectional in Hemagglutinating encephalomyelitis virus (HEV) infection (n=6,797). Hemagglutinating encephalomyelitis virus (HEV) exposure was evaluated on Presence of hemagglutination-inhibition (HI) antibody against HEV. In a serological survey of 6,797 porcine serum samples in Japan, 49.9% had hemagglutination-inhibition antibodies against hemagglutinating encephalomyelitis virus, indicating widespread infection.
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