How vigorous the sex is

The inner surface of the anus and vagina and the surface of the penis are very sensitive and delicate. 

The rougher or more vigorous the sex the more likely that microscopic abrasions and friction can damage the surface.

• This damage is unlikely to be visible.
• Any cuts or tears can act as entry points for HIV in infected genital fluids.
• Lubrication can reduce the risk of this damage.
• Slippery sex is much less likely to damage genital tissue.

If viral load is undetectable, there is no risk of HIV, even if sex is very vigorous.

PrEP also protects against HIV, even if the sex is very vigorous..

Last updated: 1 June 2021.