A new trial looks at the effect of doxycycline post-exposure prophylaxis and vaccination with meningococcal B vaccine on rates of sexually transmitted infections in men who have sex with men.
SEATTLE — Studies continue to show that taking doxycycline after having unprotected sex can prevent STIs in transgender women and men who have sex with men. What has been unclear is whether it also works for cisgender women.
Although some call the strategy s failure rate too high, it pushes the field a step closer to the holy grail of a short alternative to the standard 24-week regimen.