Combined Prevention of Sexually Transmitted Infections (STIs) in Men Who Have Sex With Men and Using Oral Tenofovir Disoproxil Fumarate/ Emtricitabine (TDF/FTC) for HIV Pre-Exposure Prophylaxis (PrEP)

"2 tablets of doxycycline 100 mg (monohydrate form) will be taken orally after each risk sexual intercourse, ideally within 24 hours after sex and no more than 72 hours. PEP should not be taken more than 3 times over a 7 days' period.~If a participant has risk sexual intercourse for several consecutive days, PEP should be taken at least 48 hours apart and no more than 3 times 2 tablets over 7 days. A maximum of 3 intakes of 2 tablets will be allowed over a period of 7 days."

1st injection of Bexsero® vaccine at inclusion visit, 2nd injection at week 8.