HIV prevention may only require two injections per year

Zero: That’s the number of new HIV infections among young women and adolescent girls who took a twice-yearly preventive medicine.

Researchers tested a new formulation of pre-exposure prophylaxis, or PrEP, in a clinical trial of HIV-negative cisgender women and teens ages 16 to 25 in South Africa and Uganda. The Phase III trial compared a twice-yearly injection of the antiviral drug lenacapavir to a widely used daily PrEP pill that contains two different antiviral drugs.

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