Quarantine inspectors checking children for vaccination marks, photograph by Black-Baker Photographers for U.S Public Health Service, 1965
Courtesy U.S. National Library of Medicine
As new vaccines developed throughout the 20th century, increased numbers of immunizations were required for immigration. These Cuban refugee children were examined for smallpox vaccination marks upon their arrival in the United States in 1965. Today, the majority of immigrants come from countries that have vaccination rates similar to, or even higher than, the United States.
