Glossary

TST – tuberculosis skin test

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.

foetal membranes are the membranes surrounding the foetus.

ascites – an abnormal accumulation of fluid in the abdomen, a sign of serious liver damage in people with hepatitis C.

antigen – a protein found on the surface of a virus or bacteria. It is recognised by the immune system which then generates antibodies.