Botulism epidemiology and demographics

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Michael Maddaleni, B.S.

Overview

Between 1910 and 1919 the death rate from botulism was 70% in the United States, dropping to 9% in the 1980s and 2% in the early 1990s, mainly because of the development of artificial respirators. Up to 60% of botulism cases can be fatal if left untreated.

The World Health Organization (WHO) reports that the current mortality rate is 5% (type B) to 10% (type A). Other sources report that, in the U.S., the overall mortality rate is about 7.5%, but the mortality rate among adults over 60 is 30%. The mortality rate for wound botulism is about 10%. The infant botulism mortality rate is about 1.3%. One study showed that about 5% of children whose death was attributed to Sudden Infant Death Syndrome had actually died of botulism.

Infant botulism (first recognized in 1976) is the most common form of the ailment in the United States, but is rarely diagnosed in other countries. It affects about 100 infants per year in the United States, with the majority in the state of California (50–60%).

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