Identification of the Oka Strain of the Live Attenuated Varicella Vaccine from Other Clinical Isolates by Molecular Epidemiologic Analysis | Zendy

Chisato Mori | Zendy; R. Takahara | Zendy; Toshiyuki Toriyama | Zendy; Takao Nagai | Zendy; M Takahashi | Zendy; K Yamanishi | Zendy

Open Access

Identification of the Oka Strain of the Live Attenuated Varicella Vaccine from Other Clinical Isolates by Molecular Epidemiologic Analysis

Author(s) -

Chisato Mori,

R. Takahara,

Toshiyuki Toriyama,

Takao Nagai,

M Takahashi,

K Yamanishi

Publication year - 1998

Publication title -

the journal of infectious diseases

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.69

H-Index - 252

eISSN - 1537-6613

pISSN - 0022-1899

DOI - 10.1086/515598

Subject(s) - psti , virology , polymerase chain reaction , biology , single strand conformation polymorphism , virus , chickenpox vaccine , varicella zoster virus , strain (injury) , attenuated vaccine , varicella vaccine , vaccination , virulence , microbiology and biotechnology , genetics , dna , gene , immunization , antibody , anatomy , restriction enzyme

A method was developed to distinguish the Oka vaccine strain of varicella-zoster virus (VZV) from other clinical isolates. The molecular characteristics of 52 clinical isolates from varicella or zoster patients with no history of VZV vaccination and the Oka strain, including vaccine and parental viruses, were analyzed by PstI cleavage of the PstI site-less (PSL) region. This was followed by single-strand conformational polymorphism (SSCP) after polymerase chain reaction amplification of repeating region 2 (R2). Most of the clinical isolates tested, especially recent isolates, had a PstI site in the PSL region, but the Oka strain did not. The SSCP patterns of R2 in Oka strain virus differed from those of other viruses. These results suggest that analysis of the PstI site followed by SSCP of R2 will be useful for identifying the Oka vaccine virus in isolates.

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