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The United States has not experienced an outbreak of louse-borne (epidemic) typhus since 1922. The last reported case, 1950, did not result from an indigenous source of infection.
Louse-borne typhus was widespread in many countries affected by World War II. Since 1945 reported cases have declined steadily. Effective insecticides and generally improved standards of living have permitted many populations to free themselves of louse infestation. A human reservoir of latent infections persists in many parts of the world, and resurgence of the
Typhus Vaccine: Recommendation on Immunization Practices. Ann Intern Med. 1968;69:785–786. doi: 10.7326/0003-4819-69-4-785
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Published: Ann Intern Med. 1968;69(4):785-786.
Infectious Disease, Prevention/Screening, Vaccines/Immunization.
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Print ISSN: 0003-4819 | Online ISSN: 1539-3704
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