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Published on: April 30, 2019
Measles--United States, January 1-April 25, 2008
Abstract:
Measles, a highly contagious acute viral disease, can result in serious complications and death. As a result of a successful U.S. vaccination program, measles elimination (i.e., interruption of endemic measles transmission) was declared in the United States in 2000. The number of reported measles cases has declined from 763,094 in 1958 to fewer than 150 cases reported per year since 1997. During 2000-2007, a total of 29-116 measles cases (mean: 62, median: 56) were reported annually. However, during January 1-April 25, 2008, a total of 64 confirmed measles cases were preliminarily reported to CDC, the most reported by this date for any year since 2001. Of the 64 cases, 54 were associated with importation of measles from other countries into the United States, and 63 of the 64 patients were unvaccinated or had unknown or undocumented vaccination status. This report describes the 64 cases and provides guidance for preventing measles transmission and controlling outbreaks through vaccination, infection control, and rapid public health response. Because these cases resulted from importations and occurred almost exclusively in unvaccinated persons, the findings underscore the ongoing risk for measles among unvaccinated persons and the importance of maintaining high levels of vaccination.
Insights
Measles elimination in the U.S. is threatened by imported cases, primarily affecting unvaccinated individuals. Maintaining high vaccination rates is crucial to prevent measles transmission and control outbreaks.
Area of Science:
- Public Health
- Infectious Diseases
- Epidemiology
Background:
- Measles, a highly contagious viral illness, can cause severe complications and death.
- The U.S. declared measles elimination in 2000 due to successful vaccination programs.
- Reported measles cases significantly decreased post-elimination, averaging 29-116 annually from 2000-2007.
Purpose of the Study:
- To describe measles cases reported in early 2008.
- To provide guidance on preventing measles transmission and controlling outbreaks.
- To emphasize the importance of vaccination in maintaining measles elimination.
Main Methods:
- Analysis of preliminary measles case data reported to the CDC.
- Review of case demographics, vaccination status, and importation links.
- Assessment of public health response strategies.
Main Results:
- 64 confirmed measles cases reported January 1-April 25, 2008, the highest by that date since 2001.
- 54 cases were linked to international importations.
- 63 of 64 patients were unvaccinated or had unknown vaccination status.
Conclusions:
- Imported measles cases pose an ongoing risk to the U.S.
- Unvaccinated individuals are at high risk for measles infection.
- Sustaining high vaccination coverage is essential for preventing measles resurgence.
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