Japanese journal of infectious diseases · 1999
Phylogenic analysis of echovirus type 30 isolated from a large epidemic of aseptic meningitis in Japan during 1997-1998.
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Yoshida H, Hong Z, Yoneyama T, Yoshii K, Shimizu H, Ota K, Murakami T, Iritani N, Tsuchiya M, Takao S, Uchida K, Yamanishi S, Hamazaki M, Yoshino S, Oseto M, Abe K, Hamano M, Sakae K, Tsuzuki H, Chiya S, Onishi H, Fujimoto T, Munemura T, Kawamoto A, Miyamura T
Аннотация
During 1997 to 1998, a nationwide epidemic of aseptic meningitis occurred in Japan. More than 4,500 isolates from patients with aseptic meningitis were identified as echovirus type 30. To investigate the character of these isolates, we examined the nucleotide sequences of thirty-seven geographical representatives and compared them with 50 strains isolated during the past 20 years. The phylogenic analysis used partial sequences from either the VP1 or VP4-VP2 region of the viral capsid. This analysis revealed that the isolates were divided into six genomic groups. All isolates identified during 1997-1998 belonged to only two genomic groups; these two groups are thought to be the causative viral agents involved in the recent epidemic.