Microbicide

Microbicides are compounds that can be applied inside the vagina or rectum to protect against sexually transmitted infections, including HIV.

They can be formulated as gels, creams, films, or suppositories. Microbicides may or may not have spermicidal activity (contraceptive effect)

At present, an [entirely] effective microbicide is not available.

Source: WHO Microbicides 

GreenFacts Summary on AIDS status & challenges of the epidemic:

• 5.2 What research efforts have been made?

Español: Microbicida
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AIDS