Seroprevalence of Toxoplasma gondii and associated risk factors among pregnant women in Jimma town, Southwestern Ethiopia

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Abstract

Background

Toxoplasmosis is a common parasitic infection caused by an obligate intracellular protozoan, Toxoplasma gondii. If primary toxoplasmosis occurs during pregnancy about one third of the cases could lead to congenital toxoplasmosis, with subsequent pathological effects. This study aimed at determining the seroprevalence of T. gondii among pregnant women in Jimma town, Southwest Ethiopia.

Methods

A community based cross-sectional study was conducted to assess the seroprevalence and associated factors in pregnant women from August to September, 2011. A total of 201 study participants were included in this study. Data on socio-demographic and predisposing factors were collected from each study participant. Moreover, venous blood specimens were collected following Standard Operating Procedures. All the collected specimens were tested for IgM and IgG anti- T. gondii antibodies by enzyme-linked immunosorbent assay (ELISA).

Results

The overall seroprevalence of T. gondii in the study area was 83.6%. One hundred and sixty three (81.1%) of the pregnant women were IgG seropositive, five (2.5%) were IgM seropositive. Three of the 5 pregnant women were positive for both IgG and IgM. Presence of domestic cat at home showed significant association with anti- T. gondii seropositivity (OR = 5.82, 95% CI: 1.61- 20.99; p < 0.05).

Conclusion

The seroprevalence of T. gondii antibodies was high among the pregnant women. Pregnant women having domestic cat at their home were at higher risk of T. gondii infection. Hence, health education and awareness on the disease and its transmission to women of reproductive age group in general and pregnant women in particular should be created during antenatal follow up to reduce the risk of T. gondii infection in pregnant women.

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Most cited references 18

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Toxoplasmosis snapshots: global status of Toxoplasma gondii seroprevalence and implications for pregnancy and congenital toxoplasmosis.

Georgios Pappas, Nikos Roussos, Matthew E. Falagas (2009)

Toxoplasma gondii's importance for humans refers mainly to primary infection during pregnancy, resulting in abortion/stillbirth or congenital toxoplasmosis. The authors sought to evaluate the current global status of T. gondii seroprevalence and its correlations with risk factors, environmental and socioeconomic parameters. Literature published during the last decade on toxoplasmosis seroprevalence, in women who were pregnant or of childbearing age, was retrieved. A total of 99 studies were eligible; a further 36 studies offered seroprevalence data from regions/countries for which no data on pregnancy/childbearing age were available. Foci of high prevalence exist in Latin America, parts of Eastern/Central Europe, the Middle East, parts of south-east Asia and Africa. Regional seroprevalence variations relate to individual subpopulations' religious and socioeconomic practices. A trend towards lower seroprevalence is observed in many European countries and the United States of America (USA). There is no obvious climate-related gradient, excluding North and Latin America. Immigration has affected local prevalence in certain countries. We further sought to recognise specific risk factors related to seropositivity; however, such risk factors are not reported systematically. Population awareness may affect recognition of said risks. Global toxoplasmosis seroprevalence is continuingly evolving, subject to regional socioeconomic parameters and population habits. Awareness of these seroprevalence trends, particularly in the case of women of childbearing age, may allow proper public health policies to be enforced, targeting in particular seronegative women of childbearing age in high seroprevalence areas.

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Outbreak of toxoplasmosis associated with municipal drinking water. The BC Toxoplasma Investigation Team.

Rhonda C. Bell, D. H. Werker, L Renton … (1997)

Outbreaks of toxoplasmosis are recognised infrequently. In March, 1995, a sudden increase of serologically diagnosed cases of acute toxoplasmosis was noted in the Greater Victoria area of British Columbia, Canada. Concurrently, but independently, seven cases of acute toxoplasma retinitis were diagnosed against a background of no cases in the previous 5 years. Cases were defined by serological testing, clinical presentation, and residence in Greater Victoria. A screening programme for women who were or had been pregnant was started. Geographical mapping of cases, and case-control studies of symptomatic cases and of women enrolled in the screening programme were done. 100 individuals aged 6 to 83 years met the definition for an acute, outbreak-related case. 94 resided in Greater Victoria and six had visited it; 19 had retinitis, 51 had lymphadenopathy, four others had symptoms consistent with toxoplasmosis, seven had other symptoms, 18 were symptom-free, and one would not provide information. 36 (0.9%) of 3812 screened pregnant and postnatal women were cases. Excess cases were not detected outside Greater Victoria and no conventional source of toxoplasmosis was implicated. Mapping studies of cases and of the screened women, and both case-control studies showed significant associations between acute infection and residence in the distribution system of one reservoir supplying water to Greater Victoria (ORs or RRs: 3.53, 3.05, 8.27, and 5.42, respectively). The epidemic curve appeared bimodal, with peaks in December, 1994, and March, 1995, that were preceded by increased rainfall and turbidity in the implicated reservoir. A municipal water system that uses unfiltered, chloraminated surface water was the likely source of this large community-wide outbreak of toxoplasmosis.

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Risk factors for Toxoplasma infection in pregnancy: a case-control study in France.

V Tirard, V. Goulet, P Thulliez … (1998)

Each year an estimated 4900 cases of primary Toxoplasma infection occur in pregnant women in France, a country with a high prevalence. Since 1992 all pregnant women at risk of Toxoplasma infection have been required to undergo monthly serological testing. This case-control study, the first of its kind in France, was undertaken to identify risk factors for Toxoplasma infection during pregnancy, with a view to improving primary prevention among non-immune pregnant women. A total of 80 pregnant women who seroconverted to Toxoplasma were matched with 80 pregnant women who had repeatedly negative tests. The women were interviewed by telephone, using a standardized questionnaire, to determine socio-demographic characteristics, exposure to possible risk factors and the type of information on prevention received during pregnancy. The risk factors for Toxoplasma infection included in a multivariate analysis were poor hand hygiene (OR = 9.9; 95%CI: 0.8-125), consumption of undercooked beef (OR = 5.5; 95%CI: 1.1-27), having a pet cat (OR =4.5; 95%CI: 1.0-19.9), frequent consumption of raw vegetables outside the home (OR = 3.1; 95%,CI: 1.2-7.7) and consumption of undercooked lamb (OR = 3.1; 95%CI: 0.85-14). Receipt of documentary advice on prevention was associated with a lower risk of infection. Prevention campaigns among pregnant women in France could be improved and should focus on eating habits, hand hygiene and cats.

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Author and article information

Journal

Journal ID (nlm-ta): BMC Infect Dis

Journal ID (iso-abbrev): BMC Infect. Dis

Title: BMC Infectious Diseases

Publisher: BioMed Central

ISSN (Electronic): 1471-2334

Publication date Collection: 2012

Publication date (Electronic): 5 December 2012

Volume: 12

Page: 337

Affiliations

[1 ]Department of Medical Laboratory Sciences and Pathology, College of Public Health and Medical Sciences, Jimma University, Jimma, Ethiopia

[2 ]Department of Biology, College of Natural Sciences, Jimma University, Jimma, Ethiopia

[3 ]Program of Medical Laboratory Science, Department of Medical Sciences, College of Medical and Health Sciences, Wollega University, Nekemte, Ethiopia

Article

Publisher ID: 1471-2334-12-337

DOI: 10.1186/1471-2334-12-337

PMC ID: 3519766

PubMed ID: 23216887

SO-VID: 1220b685-59a0-4046-a62c-183e40f7f70d

License:

This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Seroprevalence of Toxoplasma gondii and associated risk factors among pregnant women in Jimma town, Southwestern Ethiopia

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Abstract

Background

Methods

Results

Conclusion

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Most cited references 18

Toxoplasmosis snapshots: global status of Toxoplasma gondii seroprevalence and implications for pregnancy and congenital toxoplasmosis.

Outbreak of toxoplasmosis associated with municipal drinking water. The BC Toxoplasma Investigation Team.

Risk factors for Toxoplasma infection in pregnancy: a case-control study in France.

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