[Prince Charles]

Yes, I think AZT is a protease inhibitor.

[Burn24]

Pfizer = excellent company.

[tallhappy]

Yes, I think AZT is a protease inhibitor.

No. It is a polymerase inhibitor with slightly higher spcificity for reverse transcriptase, an RNA polymerase used by retroviruses.

Sars is an RNA virus but is not a retrovirus.