Infection of Porcine Testicle with Japanese Encephalitis Virus in the Field

Abstract

In August and September in 1975 and 1976, 62.5% of young boars infected with Japanese encephalitis virus (JEV) manifested scrotal enlargement accompanied with pyrexia. Of these boars sacrificed within 5 days after the appearance of this enlargement, six harbored 10^2.3-10^6.3 TCID₅₀/g of JEV.No virus was isolated from any boar 6 days or more after the appearance.
The fluorescent antibody technique revealed antigen of JEV present in the protoplasm of spermatogonia and primary spermatocytes.