March 27, 1915
“Typhoid Mary” Mallon, the first identified carrier of a disease, is quarantined until her death in 1938
Mallon had been the cook of several families, whom she unknowingly infected with Typhoid Fever, 51 people in all, killing 3. As a carrier, she was unaware she was infected with the disease as she showed no symptoms but was still able to infect others. She was quarantined twice, once from 1907-1910, then again from 1915-1938, spending a total of 26 years in isolation.