Kaplan-Meier estimates of time (28 day months) from date HIV was detected using nucleic acid amplification until the mid-point date between the last non-reactive and first reactive oral fluid HIV test.

<p>(A) By study drug group: tenofovir or placebo. (B) Controlling for study drug group, by HIV subtype: CRF01_AE or other subtypes.</p

HIV test results of participants in the Bangkok Tenofovir Study, 2005–2012.

<p>OraQuick, OraQuick Rapid HIV-1/2 Antibody Test; EIA, enzyme immune assay; NAAT, nucleic-acid amplification test. ^aTwo participants with reactive OraQuick tests during follow-up were later found to have been HIV-infected before enrollment. ^bPlasma collected at 3-monthly visits from participants with a non-reactive OraQuick test result was tested for HIV using EIA.</p