"Fever" is the story of "Typhoid Mary" Mallon, who is believed to be one of the first asymptomatic carriers of what was, at the turn of the 20th Century, a deadly disease.
The story begins with the death of a two-year-old child; Mary cooks for the family. All told, 23 people in families for whom Mary cooked die of typhoid fever ... although friends in her tenement, and her long-time partner Alfred seem to be fine.
Keane presents a look at the well-to-do and the underprivileged of New York City during the period, as well as medical practices that we would all look askance at nowadays but were state-of-the-art at the time.
The story is clearly well-researched, and touches on a good many social issues -- including the Triangle Shirtwaist Factory fire -- as a way to explore how the laboring class were treated during the time period.
Overall, it was quite a good read.