Media Availability: Model by NIH Grantees Explains Why HIV Prevention Dosing Differs by Sex

Media Availability: Model by NIH Grantees Explains Why HIV Prevention Dosing Differs by Sex

Model by NIAID Grantees Explains Why HIV Prevention Dosing Differs by Sex

A mathematical model developed by NIAID grantees predicts that women must take the antiretroviral medication Truvada daily to prevent HIV infection via vaginal sex, whereas just two doses per week can protect men from HIV infection via anal sex. This finding helps explain why two large clinical trials testing HIV pre-exposure prophylaxis, or PrEP, in women failed to show efficacy.

Learn more about this study.