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What can modelling tell us about the scale-up of lenacapavir for pre-exposure prophylaxis?
18 September 2025
Scaling up primary HIV prevention, including pre-exposure prophylaxis (PrEP), is essential to closing the prevention gap and reducing the number of new HIV infections, especially as countries approach the 95–95–95 treatment targets1 but continue to face a stagnant or rising incidence of HIV among people from key and priority populations. Injectable lenacapavir is a new long-acting injectable antiretroviral medicine given every six months for HIV prevention. In clinical trials, lenacapavir was found to be safe and effective, with 96–100% reduction in HIV acquisition compared with background rates.