Glossary

viral tropism see tropism.

secondary mutation – see minor mutation.

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

fixed dose combination (FDC) – several drugs combined in one tablet at a standard dose.

X-ray – an abbreviation for x-radiation. An X-ray lung scan is a common way to look for evidence of TB infection. X-rays can also diagnose bone fractures.