adverse event – an unexpected or unwanted effect during a research study. Sometimes this used to describe a side effect from a drug.
Although all side effects are adverse events, not all adverse events are side effects.
Glossary
Selected words and phrases
informed consent – a document that every person who participates in research is required to sign before entering the study. It outlines the details of a the study, including the known risks and benefits or any intervention. It also explains what is required during the study in terms of additional tests and clinic visits.
EVR (early virological response) – a 99% (2-log ) drop in HCV viral load after 12 weeks of HCV treatment.
TasP (Treatment as Prevention) – a term to emphasise the impact that HIV drugs (ART) has on dramatically reducing the chance of HIV transmission.
ART is firstly for the health of the HIV positive person. But having an undetectable viral load on ART makes it so difficult to transmit HIV that the risk gets so close to zero that it is effectively zero.
For example, in the PARTNER study, nearly 900 couples had sex more than 58,000 times without condoms, without any transmissions. Each couple included one person who was HIV positive with an undetectable viral load on ART and one person who was HIV negative. ZERO transmissions.