Sera from 1,238 Vietnamese women in Hanoi were tested for herpes simplex virus type 2 (HSV-2). HSV-2 prevalence was 2.0%. The Kalon and Biokit assays showed significantly higher concordance to Western blotting data than did the Focus assay (P < 0.01). Screening by Focus and then retesting with Kalon/Biokit of positive samples can reduce falsely positive results significantly (P < 0.01).
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Ngô et al. (2007) studied this question.
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