Glossary

median (average) – where the results are all arranged in numerical order and the middle of the range is taken as the (median) average. See mean.

What is an average.

performance stage – WHO classification of progress of HIV infection.

WHO classification system.

parasite – an animal or plant that get nutrients and support by living on another species.

prematurity (pregnancy) – when a baby is delivered after only 37 weeks or less.

haematology – study (-ology) of blood (haema-)