HIV/AIDS vaccine: Why don't we have one after 37 years, when we have several for COVID-19 after a few months?
- Written by Ronald C. Desrosiers, Professor of Pathology, Vice-chair for Research, University of Miami

Smallpox has been eradicated from the face of the Earth following a highly effective, worldwide vaccination campaign. Paralytic poliomyelitis is no longer a problem in the U.S....