Bradbury, Richard S., Arguello, Irene, Lane, Meredith, Cooley, Gretchen, Handali, Sukwan, Dimitrova, Silvia D., Nascimento, Fernanda S., Jameson, Sam, Hellmann, Kathryn, Tharp, Michelle, Byers, Paul, Montgomery, Susan P., Haynie, Lisa, Kirmse, Brian, Pilotte, Nils, Williams, Steven A., and Hobbs, Charlotte V. (2020) Parasitic infection surveillance in Mississippi delta children. American Journal of Tropical Medicine and Hygiene, 103 (3). pp. 1150-1153.

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Abstract

Some recent studies suggest ongoing transmission of parasitic diseases in the American South; however, surveys in Mississippi children are lacking. We enrolled 166 children (median age 8 years, range 4–13 years) from the Mississippi Delta region and carried out multi-parallel real-time polymerase chain reaction (PCR) for Necator americanus, Ascaris lumbricoides, and Strongyloides stercoralis on their stool samples. Dried blood spots were obtained for multiplex serology antibody detection. Of 166 children, all reported having flushable toilets, 11% had soil exposure, and 34% had a pet dog or cat. None had prior diagnosis or treatment of parasitic disease. Multi-parallel real-time PCRs were negative on the 89 stool DNA extracts available for testing. Dried blood spot testing of all 166 children determined the seroprevalence of IgG antibodies to Toxocara spp. (3.6%), Cryptosporidium (2.4%), S. stercoralis, Fasciola hepatica, and Giardia duodenalis (all 0%). In conclusion, parasitic infections and exposure were scarce in this population. Larger studies of at-risk populations are needed.

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