Studies on Japanese Encephalitis in recent years:Part. I: Epidemiology and Diagnosis
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概要
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Three hundred fifty-nine (359) cases of Japanese encephalitis were admitted to the Osaka Municipal Momoyama Hospital during the 5 year period from 1965 to 1969. The diagnosis was made by serological tests in the surviving cases and isolation of virus by brain puncture and the direct fluorescent antibody test were used in addition to the serological tests in those that died.<BR>The brain puncture method made it possible to positively identify 71.4% of the cases which had been hitherto considered probably positive but undetermined by serological tests, as Japanese encephalitis.<BR>Diagnosis by serological tests was possible in the majority of the cases by the HI-T (hemagglytinationinhibition antibody test) within one week after the onset of illness and by the CF-T (complement fixation test) in the second week. However, the most of the cases of older ages were positive to both the HI-T and CF-T in the first week.<BR>Of the cases positive to HI-T some were negative to CF-T, but of the cases negative to HI-T no cases were positive to CF-T.<BR>The latest isolation in this series of the virus from the brain puncture was 8th illness day, whereas, in direct fluorescent antibody test a positive result was obtainable for much longer period, the longest being 151th illness day.<BR>The incidence of Japanese encephalitis was higher in the female in older age group and higher in the male in younger age group.<BR>Among the persons who had been vaccinated against Japanese encephalitis in the last 5 years, 17 persons became infected and two died. Japanese encephalitis is said to rarely occur in the same family, but 4 patients from two families were encountered.<BR>Some cases which were supposedly due to viruses other than Japanese encephalitis virus were observed each year between May and September especially around the epidemic period of J apanese encephalitis (July-Sept.) in this series.<BR>One case caused by Herpes simplex was encountered.
- The Japanese Association for Infectious Diseasesの論文
The Japanese Association for Infectious Diseases | 論文
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