Mass vaccinations of soldiers against smallpox during the war led to similar postwar efforts for the public. Here, in 1872, New York City residents get vaccinated. (Everett Collection/Alamy Stock Photo)
Everett Collection/Alamy Stock Photo
Mass vaccinations of soldiers against smallpox during the war led to similar postwar efforts for the public. Here, in 1872, New York City residents get vaccinated. (Everett Collection/Alamy Stock Photo)
Everett Collection/Alamy Stock Photo