Please provide your email address to receive an email when new articles are posted on . Quarterly chlamydia positivity dropped from 9.6% before doxy-PEP initiation to 2% afterwards among users.

San Francisco is the first city to issue guidelines on the use of doxycycline post-exposure prophylaxis, or doxy-PEP, to prevent sexually transmitted infections, the Department of Public Health ...

City data show syphilis fell 24%, chlamydia dropped 18% and gonorrhea declined 5% year over year, according to reporting by ...

Add Popular Science (opens in a new tab) More information Adding us as a Preferred Source in Google by using this link indicates that you would like to see more of our content in Google News results.