1887

Abstract

Summary

The herpes simplex virus type 2 (HG52) deletion variant JH2604 is avirulent (LD > 10 p.f.u./mouse) for mice compared to the parental wild-type virus (LD < 10 p.f.u./mouse) and fails to replicate . JH2604 has a 1488 bp deletion within the 3 kb HI fragment (0 to 0·02 and 0·81 to 0·83 map units) which removes one copy of the 17 bp direct repeat DR1 element of the ‘a’ sequence and terminates 522 bp upstream of the 5′ end of the immediate early gene 1. selection after transfection of intact JH2604 DNA with the HI ( + ) joint fragment of HG52 results in the isolation of wild-type virus with an LD of < 10 p.f.u./mouse. These results show that a 1488 bp sequence within the terminal portion of the genome long repeat region confers neurovirulence on strain HG52.

Keyword(s): deletion , HSV-2 and neurovirulence
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/content/journal/jgv/10.1099/0022-1317-70-11-3073
1989-11-01
2022-08-14
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