Has PrEP ever failed?

Dear Bob, I am a research educator and advocate that has done and continues to do a lot of work around PrEP. I believe I heard you say that not one case anywhere had been identified where a patient who had blood levels consistent with daily dosing seroconverted. Is my...

Does PrEP work if condoms are not used?

Dear Bob, I am a heterosexual male and I recently began taking PrEP.  Are there any research studies that will be able to assess if Truvada is effective for people who don’t use condoms? I use condoms but there are times when they break or slip off without a...

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