Rapid herpes simplex virus detection in clinical samples submitted to a state virology laboratory

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Abstract
Of 16,779 specimens received for herpes simplex virus (HSV) isolation since 1982, 4,465 (26.6%) were positive for HSV by either standard tissue culture or an antigen detection system (peroxidase-antiperoxidase; PAP). The overall isolation rate for genital vesicle specimens was lower (26.1%) than that for nongenital specimens (29.3%). Monthly isolation rates ranged from 19 to 32% for genital specimens and from 20 to 44% for nongenital specimens. Increasing demands for HSV isolation led to comparison of tissue culture with PAP. In the first comparison, HSV was isolated in single human fibroblast cell cultures from 1,019 of 4,261 specimens (23.9%), whereas single human fibroblast wells stained at 24 and 72 h postinoculation were PAP positive for 1,007 of 4,261 specimens (23.6%). In the second comparison, HSV was isolated from 225 of 1,026 (21.9%) specimens and duplicate human foreskin fibroblast cell wells stained at 24 and 72 h were PAP positive in 241 of 1,026 (23.5%). With the dual-well PAP system, all results were reported within 72 h, approximately 70% of positives were reported within 24 h, and considerable savings in time and materials resulted.

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