ALT Graphic illustration of spiraled bacteria with text stating 'FDA marketing authorization enables increased access to first step of syphilis diagnosis' alongside the FDA logo.

ALT Incidence of HIV Infection.

ALT Adherence was assessed on the basis of tenofovir diphosphate levels in red cells in dried-blood-spot samples from all trial visits from a randomly preselected 10% of participants in the F/TAF and F/TDF groups (Panel A). To assess the association between adherence and HIV prevention efficacy in the F/TAF group, a matched case–control analysis was conducted (Panel B).