Contamination of soils by geohelminths ova in key social areas of Vladivostok

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BACKGROUND: Geohellminthiasis constitutes approximately 90% of all parasitic diseases affecting the population. WHO recommends regular parasitological monitoring of the soil, for the subsequent assessment of its parasitic contamination and the development of epidemiological measures for the prevention of parasitoses among the population.

AIM: To study soil contamination by geohelminths ova in important social areas in the city of Vladivostok.

METHODS: Soil samples were collected from the territories of residential blocks, parks and playgrounds. In total, 671 soil samples were collected. Samples the collection was carried out according to MUC 4.2.796-99 and examined using the Romanenko method. The prevalence (%)and intensity of contamination per gram of soil sample were calculated.

RESULTS: In total, 7 morphological forms of geohelminth ova were found: Toxocara spp., Toxascaris leonina, Uncinaria stenocephala, Ascaris spp., Ancylostoma spp., Dypilidium caninum and Taenia spp. Propagative stages of helminths were found in 401 of 671 samples. The overall prevalence of contamination was 59.8%. Toxocara spp. were the most prevalent contaminating 300 (44.7%) of the samples. Geohelminths ova were found in soil samples at all sites. Parks and residential areas were the most contaminated.

CONCLUSION: Geohelminths ova were found in all kay social areas of Vladivostok warranting urgent epidemiological measures to improve the situation.

作者简介

Tatyana Tabakaeva

Far Eastern Federal University

编辑信件的主要联系方式.
Email: tabakaeva.tv@dvfu.ru
ORCID iD: 0000-0002-9517-7495
俄罗斯联邦, 1 Selskaya street, 690087 Vladivostok

Michael Shchelkanov

Far Eastern Federal University

Email: adorob@mail.ru
ORCID iD: 0000-0001-8610-7623

dr. sci. (biol.), associate professor

俄罗斯联邦, 1 Selskaya street, 690087 Vladivostok

Irina Galkina

Far Eastern Federal University

Email: galkina333@mail.ru
ORCID iD: 0000-0002-7899-555X
俄罗斯联邦, 1 Selskaya street, 690087 Vladivostok

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1. JATS XML
2. Fig. 1. Proportion of contaminated samples across helminth species.

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3. Fig. 2. Prevalence of soil contamination in residential areas

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4. Fig. 3. Prevalence of soil contamination in parks of Vladivostok.

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5. Fig. 4. Prevalence of soil contamination in Vladivostok. Here: ДДУ — preschools.

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6. Fig. 5. Intensity of soil contamination in Vladivostok. Here: ДДУ — preschools.

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