Sylwer fod y cymhwysiad hwn dan ddatblygiad. Os ydych chi'n gweld unrhyw gamgymeriadau neu os nad yw rhywbeth yn gweithio, cysylltwch â ni yn evidence.service@wales.nhs.uk.
Arweiniad
Dywed yr awduron:
"This guideline covers interventions to prevent sexually transmitted infections (STIs) in people aged 16 and over. It aims to reduce the transmission of all STIs, including HIV, and includes ways to help increase the uptake of STI testing and vaccines for human papillomavirus (HPV) and hepatitis A and B."
Dywed yr awduron:
"This guideline includes recommendations on: