A recent study by the London School of Hygiene and Tropical Medicine has estimated that over half a million gay and bisexual men are unable to access PrEP, the HIV-preventing drug, in Europe.
Pre-Exposure Prophylaxis (PrEP) is a drug that is taken by somebody who is HIV-negative, to prevent them from acquiring the HIV virus.
In several large studies across Europe and further afield, the evidence suggests that the drug is very effective in preventing the sexual transmission of HIV.