Glossary

coronary heart disease (CHD) refers to the three main arteries that supply blood from the heart.

A coronary by-pass is a surgical operation to provide a new route for blood to reach the heart when coronary arteries become blocked.

major mutation – a drug resistance mutation that have a big impact on whether a drug continues to work. This used to be called a primary mutation.

viral tropism see tropism.

performance stage – WHO classification of progress of HIV infection.

WHO classification system.

clinical failure – when you develop new symptoms and illnesses even though you are on treatment. See virological failure.