Typhoid Mary: the super-spreader before the term even existed

Mary Mallon triggered multiple outbreaks in New York at the turn of the 20th century - and some believe she suffered prejudice not shown to other asymptomatic carriers

Mary Mallon was a super-spreader before the term existed, a disease carrier so notorious she acquired a celebrity nickname: Typhoid Mary.

Mallon showed no symptoms but was infected with typhoid and triggered multiple outbreaks in New York at the turn of the 20th century.