Rahima Banu had the last recorded case of naturally occurring variola major smallpox, a deadly strain of the virus, in 1975. At left: Banu in her mother's arms as a small child. At right: Banu today, close to 50 years old, lives in a small village in Bangladesh with her husband, Rafiqul Islam, and their children.
Michael Schwartz/CDC, Céline Gounder/KFF Health News
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