The method is largely ineffective in the prevention of sexually transmitted infections (STIs/STDs), like HIV, since pre-ejaculate may carry viral particles or bacteria which may infect the partner if this fluid comes in contact with mucous membranes.
The method is not effective in preventing sexually transmitted infections (STIs/STDs), like HIV, due to the presence of pre-ejaculate that may carry viral particles or bacteria which can infect a partner if it comes into contact with mucous membranes.