[Epidemic of aseptic meningitis with echovirus type 7 in Gifu prefecture in 1986].
During the period from April to November in 1986, an epidemic of aseptic meningitis occurred in Gifu prefecture. Epidemiological, virological and serological investigations were performed. Cases involved ranged from 0 to 30 years of age, and 84.2% of them were under 7 years of age. Seven types of enteroviruses were isolated from 136 of 190 cases (71.6%), and echovirus type 7 was recovered from 121 cases (88.9%). With the cross neutralizing test between the prototype and isolated strains in 1986 of echovirus type 7, a remarkable antigenic variation could not be found. In the serological studies, the positive rates of neutralizing antibodies to echovirus type 7 in 1985, was lower than those in 1975. During the past 18 years before the 1986, echovirus type 7 was not isolated in Gifu prefecture, but in the serological studies, it was confirmed that the sporadic infection with echovirus type 7 had occurred in Gifu prefecture.
Miwa
C
C
Watanabe
Y
Y
D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D004196:Disease Outbreaks; D004457:Echovirus Infections / Q000453:epidemiology* / Q000382:microbiology; D029822:Enterovirus B, Human / Q000302:isolation & purification; D005260:Female; D006801:Humans; D007223:Infant; D007564:Japan / Q000453:epidemiology; D008297:Male; D008581:Meningitis / Q000453:epidemiology*; D008582:Meningitis, Aseptic / Q000453:epidemiology* / Q000382:microbiology; D008587:Meningitis, Viral / Q000453:epidemiology* / Q000382:microbiology