Title: MMWR Vol. 59 / No. SS-6
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Surveillance Summaries
Volume 59, No. SS-6
June 11, 2010
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| Cryptosporidiosis Surveillance — United States, 2006–2008
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During 2006–2008, the number of reported cases of cryptosporidiosis increased dramatically (79.9%), from 6,479 for 2006 to 11,657 for 2007, and then decreased (9.9%) to 10,500 in 2008. A greater number of case reports were received for children aged 1–9 years and for adults aged 25–39 years than were received for persons in other age groups. The increase in cases reported for 2007 and 2008 is partially attributable to multiple large recreational
water-associated outbreaks. The seasonal and age-specific peak coincides with the summer recreational water season and likely reflects increased use of communal swimming venues (e.g., lakes, rivers, swimming pools, and water parks) by young children.
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| Giardiasis Surveillance — United States, 2006–2008
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During 2006–2008, the total number of reported cases of confirmed giardiasis increased slightly from 19,239 for 2006 to 19,794 for 2007 and decreased slightly to 19,140 for 2008. A greater number of case reports were received for children aged 1–9 years and for adults aged 35–44 years compared with other age groups. Incidence of giardiasis was highest in northern states. Peak onset of illness occurred annually during early summer through early fall. The
seasonal peak in age-specific case reports coincides with the summer recreational water season and likely reflects increased outdoor activities and exposures such as camping and use of communal swimming venues (e.g., lakes, rivers, swimming pools, and water parks) by young children.
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Department of Health and Human Services
Centers for Disease Control and Prevention
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