Typhoid Mary
"Typhoid Mary" was a nickname coined during the mid-20th century to describe a Human female who was responsible for spreading the deadly typhoid pathogen while remaining immune herself.

In 2269, Doctor Leonard McCoy compared Doctor Sevrin – who carried, but was immune to Synthococcus novae – to "Typhoid Mary". ()

When Seven of Nine began exhibiting multiple personalities in 2375 because of a dysfunctional Borg vinculum infected with a virus,  The Doctor found that in this case, the "Typhoid Mary" was Species 6339 that carried a synthetic pathogen within their bodies; once they were assimilated by the Borg, the virus spread to the vinculum, which in turn caused havoc, leading to dysfunction and eventually the destruction of the Borg cube's drones. ()

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fr:Mary Mallon
Nicknames
Humans
Medicine