first-line therapy

The regimen used when starting treatment for the first time.

foetus

(fee-tuss)

An unborn baby.

folliculitis

(fol-lick-you-ly-tuss)

Infection of the follicles, small sacs or glands in the skin such as those found at the base of hairs.

fungi

A group of organisms, including the yeasts which cause candidiasis and cryptococcosis.

fusion inhibitor

(few-shun in-hib-i-tor)

Anti-HIV drug targeting the point where HIV locks on to an immune cell.