Glossary

asymptomatic – showing no signs of illness.

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.

DOT (directly observed therapy) – where a nurse or other healthcare worker observes or supervises someone take medicine.

buprenorphine – strong pain-killer useful for treating heroin addiction. See also methadone.

In utero is within the uterus or womb before the onset of labour.