The series finale of “Epidemic: Eradicating Smallpox” is a visit to the home of Rahima Banu, the last person with a documented case of naturally occurring variola major smallpox. When the virus was declared eradicated, she became a symbol of one of the greatest victories in global public health....

What good is a vaccine when there is no rice? Episode 7 of “Eradicating Smallpox” explores the barriers public health workers face in communities where people’s basic needs aren’t being met.