
This photo provided by Bernardo Arriaza shows the Camarones coast on Nov. 2, 2018, in Northern Chile, where scientists found evidence of ancient smallpox infections. (Bernardo Arriaza via AP)

This photo provided by Bernardo Arriaza shows the Camarones coast on Nov. 2, 2018, in Northern Chile, where scientists found evidence of ancient smallpox infections. (Bernardo Arriaza via AP)