Glossary

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

TST – tuberculosis skin test

oesophagus – part of the gut between the throat and the stomach.

cubic millimitre (mm³) – a measure of a volume. Same as microlitre (µL) and million parts per litre (10⁶/L). Practically, a drop of blood.

null hypothesis – in a study this sometimes just refers to the hypothesis, but more specifically it refers the idea that any difference between 2 study groups has only occurred by chance.