Circumcision is a tool to combat HIV. But it is also a very much debated tool where opinions about efficiency clash hard. Here an article which might give some more insight into the question of circumcision.
- Circumcision study supports HIV theory (latimes.com)
- Circumcision Alters Penis Bacteria (livescience.com)
- Circumcision alters penis microbiome, could explain HIV protection (medicalxpress.com)