In Canada, you have to take an HIV test if you plan to stay for more than six months. All long-term visitors are assessed in terms of how much ‘excessive demand’ they might put on the Canadian health ...

Key points Using condoms correctly will prevent them breaking, leaking or slipping off during sex. Use only water-based or silicone lubricants, not oil-based. If you lose your erection the condom may ...

Unbroken healthy skin, because cells vulnerable to HIV infection do not exist on the surface of the skin. Kissing, because HIV cannot be transmitted in saliva. Coughing or sneezing, because HIV cannot ...

This page outlines the possible side-effects of the currently recommended combination of PEP medications, as well as the side-effects of other medications that may be used as alternatives.

The window period refers to the time after infection and before seroconversion, during which markers of infection (p24 antigen and antibodies) are still absent or too scarce to be detectable. Tests ...

A man in southern California, dubbed the 'City of Hope patient', appears to be the latest person cured of HIV after receiving a stem cell transplant from a donor with a rare mutation, bringing the ...

When a person is undetectable, condoms are not required to prevent HIV transmission, but being undetectable does not protect against other sexually transmitted infections. U=U applies to transmission ...

Key points For unprotected vaginal intercourse with an HIV-positive partner with a fully suppressed viral load, the estimated risk of infection is zero. If HIV is not fully suppressed by effective ...

Over half of funding for anti-gender actors in Europe appears to come from within Europe itself, with significant amounts of money also flowing from the US and the Russian Federation, according to ...

The specificity of an HIV test is the proportion of people without HIV who will have a negative result. In other words, the specificity of a test refers to how accurate the test is when used by ...

Key points This page covers the criminalisation of HIV transmission in England, Wales and Northern Ireland. The law in Scotland is different. A person may be charged if their sexual partner acquires ...

There are six main types (‘classes’) of antiretroviral drugs. Different classes work at different stages of the HIV lifecycle to stop it making new viruses. Generally, drugs from two (or sometimes ...