Glossary

ritonavir – a protease inhibitor (PI) that is now used boost levels of some other  HIV drugs, especially other PIs.

in vitro – a study in a test tube. Literally, ‘in glass’.

primary HIV infection (PHI) – early infection (usually first six months with after HIV infection). Sometimes called acute infection.

performance stage – WHO classification of progress of HIV infection.

WHO classification system.

DNA – an abbreviation for the scientific word for genes and genetic material. It is the abbreviation for deoxyribonucleic acid. See RNA.