J Korean Neurol Assoc.  1985 Dec;3(2):203-209.

Hemagglutination Inhibition Test in Epidemic Encephalitis of Korea

• Sunwoo IN
• Kim KH

Abstract

Analyzing HI tests of 110 cases of clinical Japanese Encephalitis in 1982, the following results are obtained. 1. The results of HI test are positive in 39 (35.5%), borderline positive in 19 (9.1%), negative in 14 (12.7%) and undetermined in 47 (43.7%) cases. 2. In 49 cases of positive HI test, 14 cases reveal the positive result on the first HI test requested in 5-27 days after the clinical onset of symptoms, and 35 cases show increasing HI titers on the follow-up studies. There is a tendency of increasing HI titers upto 3-4 weeks of onset and sustaining the value for more than two months. 3. In 35 cases with increasing titers on follow-up study, the highest titer is 1:80 in 5 cases, and the half of HI negative cases maintain that value throughout the course. 4. There is no significant statistical differences in clinical characteristics, laboratory and cerebrospinal fluid studies between the patient group of HI positive or borderline and group of HI negative or undermined, except mean hospital day and incidence of coma and death.

MeSH Terms

Cerebrospinal Fluid
Coma
Encephalitis, Arbovirus*
Encephalitis, Japanese
Follow-Up Studies
Hemagglutination Inhibition Tests*
Hemagglutination*
Humans
Incidence
Korea*