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The short-term detection and variability of human immunodeficiency virus type 1 (HIV-1) RNA level was assessed in the blood plasma and genital tracts of 55 HIV-1-infected women. Specimens were collected weekly for 8 weeks from the endocervical canal with wicks and cytobrushes and from the ectocervix and vagina with cervicovaginal lavage. In all, 48 women (87.3%) had detectable genital tract HIV-1 RNA at &gt; or =1 collection times. HIV-1 RNA levels varied least in specimens from endocervical canal wick and most in cervicovaginal lavage samples. The within-subject variation for genital-tract virus level was greater than that for blood. Overall, the odds for viral RNA detection in the genital tract approximately tripled for each 10-fold increase in plasma viral RNA concentration (P&lt;.001) or with concomitant genital tract infection (P=.003). Endocervical canal wicks should be considered as an adjunct to cervicovaginal lavage, to improve the sensitivity and precision of HIV-1 RNA detection.

the journal of infectious diseases (online. university of chicago press)/the journal of infectious diseases

Variation of Human Immunodeficiency Virus Type 1 Viral RNA Levels in the Female Genital Tract: Implications for Applying Measurements to Individual Women