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MMWR Morb Mortal Wkly Rep. 1999 Apr 2;48(12):243-8.

Impact of vaccines universally recommended for children--United States, 1990-1998.

Abstract

At the beginning of the 20th century, infectious diseases were widely prevalent in the United States and exacted an enormous toll on the population. For example, in 1900, 21,064 smallpox cases were reported, and 894 patients died. In 1920, 469,924 measles cases were reported, and 7575 patients died; 147,991 diphtheria cases were reported, and 13,170 patients died. In 1922, 107,473 pertussis cases were reported, and 5099 patients died.

PMID:
10220251
[Indexed for MEDLINE]
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