Analysis of strongyloidiasis epidemic situation in the Russian Federation for 2016-2024

The study showed the continued risk of invasion by strongyloidiasis in the Russian Federation. In the period from 2016 to 2024, 91 cases of the disease were registered in 32 regions of the country (38 %). In 71 % of cases, infection occurred on the territory of the Russian Federation. The incidence rate decreased from 0.012 ⁰/₀₀₀₀ to 0.006 ⁰/₀₀₀₀ during the specified period.

According to the analysis of the cards of the epidemic survey of cases of stron-gyloidiasis (2019-2024), children aged 0-17 years account for 33% of the total number of cases. The average age of patients is 31 years, while there is a slight predominance of males among those infected. Most cases of the disease were registered among citizens of the Russian Federation. More than 73 % of those infected are urban residents. The largest number of cases was recorded among the unemployed population (80 %). Strongyloidiasis was asymptomatic in 22 % of patients. Among the clinical manifestations, abdominal pain of varying intensity, diarrheal syndrome and skin rashes, including itchy exanthema, were observed. In 29 % of cases, infection occurred during trips abroad, most often to endemic countries such as Thailand, Abkhazia, and Vietnam. The main causes of infection are contact with earth or sand.

The sanitary and parasitological study (2010-2024) showed that the causative agents of strongyloidiasis were detected at environmental facilities in 30 regions of the Russian Federation. The most contaminated with eggs and larvae were sewage and sludge residues (0.23 ⁰/₀₀), sewage (0.17 ⁰/₀₀), food products and food raw materials (0.16 ⁰/₀₀), sand and soil (0.15 ⁰/₀₀).

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