| epidemiological studies on japanese encephalitis in kyoto city area, japan. ii. annual patterns of virus dissemination on virus recoveries from unfed culex tritaeniorhynchus summorosus. | annual patterns of dissemination of japanese encephalitis virus in vector mosquitoes have been investigated at the main collection station from 1965 through 1973 at some other stations from 1969 through 1971. the virus was recovered usually from culex tritaeniorhynchus summorosus during a period of about a month from july to august every year till 1969, and from august to september after 1970, although at some of the stations the virus was recovered intermittently for longer or shorter terms. hi ... | 1978 | 207914 |
| epidemiological studies on japanese encephalitis in kyoto city area, japan. iv. natural infection in sentinel pigs. | natural infection with japanese encephalitis virus in three sentinel pigs held in separate experimental huts was examined daily by virus recovery from blood samples of the pigs and from mosquitoes after incubation for about 7 days from their blood feeding and by hi antibody titration of the blood samples. after a period of low infection rates, below 6%, for about two weeks in engorged culex tritaeniorhynchus summorosus, high mosquito infections of over 30% from each viremic pig occurred for two ... | 1978 | 213633 |