Journal
PARASITE EPIDEMIOLOGY AND CONTROL
Volume 7, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.parepi.2019.e00117
Keywords
Disease outbreaks; Toxoplasmosis; Public health surveillance
Funding
- Fundacao CAPES
- FAPEMA Foundation (Maranhao State Foundation for Scientific Research and Technological Development)
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Waterborne outbreaks of human toxoplasmosis can have great magnitude due to the number of persons infected while smaller-scale outbreaks are also possible. This is a study based on a historical database investigating a toxoplasmosis outbreak occurred in 2006 in a residential community in Sao Luis, in the Brazilian state of Maranhao. Ninety of the 110 residents, employees and domestic helping persons had blood samples collected and tested. The diagnosis of toxoplasmosis was established by quantification of anti-Toxoplasma gondii immunoglobulin M and immunoglobulin G antibodies using enzyme immunoassay. The subjects were classified as past infection, acute/recent infection or seronegatives. The definition of acute infection was based on the presence of indicative symptoms and immunoglobulin M positivity. There were 33 cases of acute infection. The outbreak was concluded to be waterborne: consumption of faucet-mount filtered water was indicated as risk factor. We discuss the challenges of investigating waterborne toxoplasmosis outbreaks. (C) 2019 The Author(s). Published by Elsevier Ltd on behalf of World Federation of Parasitologists.
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