| Japanese B encephalitis virus | A virus of the genus Flavivirus (group B arbovirus) occurring particularly in Japan but probably widespread throughout Southeast Asia; the virus is normally present in humans, especially in children, as an inapparent infection, but may cause febrile response and sometimes encephalitis; it may cause encephalitis in horses and abortion in pigs; wild birds are probably the natural hosts and culicine mosquitoes the vectors. Synonym: Russian autumn encephalitis virus. (05 Mar 2000) |
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| Japanese dysentery | Infection with Shigella dysenteriae, S. Flexneri, or other organisms. Synonym: Japanese dysentery. (05 Mar 2000) |
| Japanese river fever | See Typhus, scrub. (12 Dec 1998) |