Background
Toxoplasmosis is an infection caused by Toxoplasma gondii, a globally distributed parasite. In pregnant women, primary infection can lead to congenital toxoplasmosis, resulting in severe birth defects or serious sequelae later in life. The main objective of the present study was to provide epidemiological data on T. gondii infection in pregnant women in our health care area.
Method
We collected the results of T. gondii serology in pregnant women in the health area of our hospital between 2015 and 2022. Both prevalence and incidence were studied. Differences in prevalence and incidence were analysed based on the womeńs age and their area of residence (differentiating between urban and rural areas). The evolution of incidence and prevalence over the years was also examined.
Results
A total of 20,117 pregnant women were included in the study. The prevalence found was 26.98% (5427/20,117), and the incidence was 0.19% (26/13,443). The incidence decreased significantly during the study period, by 34.6% per year, and the prevalence also showed a significant annual decrease of 5.25% since 2018 using Joinpoint regression model. The seroprevalence was significantly higher in women from rural areas and in women above or equal to the median age. Additionally, a subgroup of 379 women from Central and South America was studied, revealing a prevalence of 32.7% (124/379).
Conclusion
Incidence and prevalence of T. gondii have declined significantly in recent years. To guide the implementation of effective gestational screening, it is essential to have up-to-date prevalence and incidence data for different geographical areas of Spain. This will help determine not only the necessity of screening but also the most suitable methods for its implementation.
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