| word | definition |
| acyclovir | uses against herpes simplex and chicken pox and azidothymidine |
| azidothymidine (AZT) | reverse transcriptase of retroviruses; interfere with the synthesis of viral nucleic acids |
| antiviral drug | drugs that interfere with the viral nucleic acid synthesis |
| inactivated virus | do not replicate in a host cell |
| attenuated virus | have been genetically altered so that they are incapable of causing disease in normal circumstances |
| protease inhibitors | interferes with the synthesis of viral capsids during viral replication |
