About Smallpox - Centers for Disease Control and Prevention | CDC (.gov)

About Smallpox  Centers for Disease Control and Prevention | CDC (.gov)

Opinion: Lessons of Smallpox eradication and COVID-19 - AJC.com

Opinion: Lessons of Smallpox eradication and COVID-19  AJC.com

Infectious diseases: Smallpox watch - Nature

Infectious diseases: Smallpox watch  Nature

Forgotten vials of smallpox found near D.C. - USA Today

Forgotten vials of smallpox found near D.C.  USA Today

Multiple diagnostic techniques identify previously vaccinated individuals with protective immunit...

Multiple diagnostic techniques identify previously vaccinated individuals with protective immunity against monkeypox  Nature