Seventy-nine patients of the Japanese B encephalitis, that were initially diagnosed by clinical findings, were examined employing hemagglutination inhibition(HI) test 2 times at interval of one week, and the correlation between clinical findings and results of HI test was investigated.
The results obtained as follows.
1) Among 78 patients who were initially diagnosed with Japanese B encephal;tis by clinical findings, 26.5 per cents had a positive titers in HI test.
2) There were no difference between Hl positive and negative groups in the seasonal incidence. age distribution, clinical symptoms, neurological signs and findings of cerebrospinal fluid.
3) The peJpberal leukocytosis were observed in both groups.
4) The sequela incidence of Japanese B encephalitis was about 15 per cent, and among them quadriplegia and speech disturbance were more prominent.
5) No correlation between the onset duration and consciousness states on admission was fonnd.
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