title: Natural and experimental infections of Japanese tree sparrows with Japanese encephalitis virus.
abstract: 20 to 37 per cent of wild Japanese tree sparrows had neutralizing antibodies to Japanese encephalitis virus (JEV). Sparrows free of antibodies were inoculated with 10,000 plaque-forming units of JEV. None of the birds became clinically ill. Virus could be detected in blood plasma during the first 3 days after inoculation but not thereafter. Neutralizing antibodies started to appear at 4 days after inoculation and the response was of variable duration, in some cases extending up to 200 days after inoculation.
mesh_terms: D000818:Animals; D000914:Antibodies, Viral / Q000302:isolation & purification; D001715:Bird Diseases / Q000382:microbiology*; D001717:Birds; D004197:Disease Reservoirs / Q000662:veterinary*; D004664:Encephalitis Virus, Japanese / Q000254:growth & development* / Q000276:immunology; D004672:Encephalitis, Japanese / Q000662:veterinary*; D007564:Japan; D009500:Neutralization Tests
chemical_list: D000914:Antibodies, Viral