1921
Volume 90, Issue 6
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645

Abstract

Abstract.

is a ubiquitous parasite that can cause neurologic and ocular disease. We tested sera from 7,072 people ≥ 6 years of age in the 2009–2010 National Health and Nutrition Examination Survey (NHANES) for immunoglobulin G antibodies and compared these results with two previous NHANES studies. The overall antibody seroprevalence among persons ≥ 6 years of age in 2009–2010 was 13.2% (95% confidence limit [CL] 11.8%, 14.5%) and age-adjusted seroprevalence was 12.4% (95% CL 11.1%, 13.7%); age-adjusted seroprevalence among women 15–44 years of age was 9.1% (95% CL 7.2%, 11.1%). In U.S. born persons 12–49 years of age, the age-adjusted seroprevalence decreased from 14.1% (95% CL 12.7%, 15.5%) in NHANES III (1988–1994) to 9.0% (95% CL 7.6%, 10.5%) in NHANES 1999–2004 to 6.7% (95% CL 5.3%, 8.2%) in NHANES 2009–2010 ( < 0.001 linear trend). Although antibody presence is still relatively common, the prevalence in the United States has continued to decline.

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  • Received : 06 Jan 2014
  • Accepted : 03 Mar 2014
  • Published online : 04 Jun 2014

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