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Published on: January 7, 2019

Update: measles--United States, January-July 2008

    MMWR. Morbidity and Mortality Weekly Report
    |August 22, 2008
    PubMed

    Insights

    Measles outbreaks are occurring in the U.S. due to imported cases and low vaccination rates, particularly among children. Maintaining high measles, mumps, and rubella (MMR) vaccination coverage is crucial for continued measles elimination.

    Area of Science:

    • Public Health
    • Infectious Diseases
    • Epidemiology

    Background:

    • Measles was declared eliminated in the U.S. in 2000, but sporadic importations continue.
    • An increase in reported measles cases occurred from January-July 2008, with 131 cases compared to a 2000-2007 average of 63 cases per year.
    • Recent outbreaks involved unvaccinated school-aged children.

    Purpose of the Study:

    • To update information on measles cases in the U.S. during 2008.
    • To summarize recent measles outbreaks in the U.S.
    • To highlight the role of vaccination status and imported cases in measles transmission.

    Main Methods:

    • Analysis of measles case data reported to the Centers for Disease Control and Prevention (CDC) during January-July 2008.
    • Review of recent measles outbreaks in the United States.
    • Examination of case demographics, vaccination status, and origin of infection.

    Main Results:

    • During January-July 2008, 131 measles cases were reported.
    • 76% of cases were in individuals under 20 years old.
    • 91% of cases were in unvaccinated or unvaccinated individuals of unknown status.
    • 89% of cases were imported or linked to importations, with a notable connection to ongoing outbreaks in Europe.

    Conclusions:

    • Measles outbreaks can occur in communities with a significant proportion of unvaccinated individuals.
    • Maintaining high measles, mumps, and rubella (MMR) vaccination coverage is essential for preventing widespread measles transmission.
    • Continued vigilance against imported measles cases is necessary to sustain elimination efforts.

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