Maeda O, Karaki T, Kuroda A, Karoji Y, Sasaki O, Takenokuma K
Jpn J Med Sci Biol. 1978 Feb;31(1):39-51. doi: 10.7883/yoken1952.31.39.
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. Higher infection rates were recorded with the mosquitoes caught at the stations near to pig sheds than at the stations far from pig sheds. The infection rates at the peak of virus recovery in high epidemic year (1965 to 1967) were higher, being over 2%, than those in lower or latent epidemic years (1968 to 1973). Human patients of Japanese encephalitis were found in 17 to 20 days after the appearance of the highest peak of the infection rate in mosquitoes.
1965年至1973年期间，在主要采集站对日本脑炎病毒在媒介蚊虫中的年度传播模式进行了调查，1969年至1971年期间在其他一些站点也进行了调查。直到1969年，每年大约从7月到8月的一个月时间里，通常从三带喙库蚊中分离到病毒，1970年以后则从8月到9月分离到病毒，不过在一些站点，病毒被间歇性分离到的时间有长有短。在靠近猪圈的站点捕获的蚊虫感染率高于远离猪圈的站点。高流行年份（1965年至1967年）病毒分离高峰期的感染率较高，超过2%，高于低流行或潜伏流行年份（1968年至1973年）。在蚊虫感染率最高峰值出现后的17至20天内发现了日本脑炎患者。
