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Etewa SE, Abdel-Rahman SA, Abd El-Aal NF, et al. Geohelminths distribution as affected by soil properties, physicochemical factors and climate in Sharkyia governorate Egypt. J Parasit Dis. 2014;40(2):496-504doi: 10.1007/s12639-014-0532-5.
Etewa, S. E., Abdel-Rahman, S. A., Abd El-Aal, N. F., Fathy, G. M., El-Shafey, M. A., & Ewis, A. M. (2016). Geohelminths distribution as affected by soil properties, physicochemical factors and climate in Sharkyia governorate Egypt. Journal of parasitic diseases : official organ of the Indian Society for Parasitology, 40(2), 496-504. https://doi.org/10.1007/s12639-014-0532-5
Etewa, Samia E, et al. "Geohelminths distribution as affected by soil properties, physicochemical factors and climate in Sharkyia governorate Egypt." Journal of parasitic diseases : official organ of the Indian Society for Parasitology vol. 40,2 (2016): 496-504. doi: https://doi.org/10.1007/s12639-014-0532-5
Etewa SE, Abdel-Rahman SA, Abd El-Aal NF, Fathy GM, El-Shafey MA, Ewis AM. Geohelminths distribution as affected by soil properties, physicochemical factors and climate in Sharkyia governorate Egypt. J Parasit Dis. 2016 Jun;40(2):496-504. doi: 10.1007/s12639-014-0532-5. Epub 2014 Aug 31. PMID: 27413327; PMCID: PMC4927514.
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J Parasit Dis. 2016 Jun;40(2):496-504. doi: 10.1007/s12639-014-0532-5. Epub 2014 Aug 31.

Geohelminths distribution as affected by soil properties, physicochemical factors and climate in Sharkyia governorate Egypt.

Journal of parasitic diseases : official organ of the Indian Society for Parasitology

Samia E Etewa, Sara A Abdel-Rahman, Naglaa F Abd El-Aal, Ghada M Fathy, Mahmoud A El-Shafey, A M G Ewis

Affiliations

  1. Medical Parasitological Department, Faculty of Medicine, Zagazig University, Sharkyia, Egypt.
  2. Clinical Pathology Department, Faculty of Medicine, Zagazig University, Sharkyia, Egypt.
  3. Soil and Water Department, Faculty of Technology, Development, Zagazig University, Sharkyia, Egypt.

PMID: 27413327 PMCID: PMC4927514 DOI: 10.1007/s12639-014-0532-5

Abstract

Soil-transmitted helminths are mainly a group of parasitic nematodes causing human infection through contact with parasite eggs or larvae; they survive in the warm and moist soil of the tropical and subtropical countries. This study was carried out in Sharkyia governorate from October, 2011 to October, 2013, to correlate between the prevalence and distribution of these parasites in the soil and the physicochemical factors affecting the examined samples of the soil. One hundred and twenty samples of different types of soil (clay, silt, sand) from different localities were collected and examined. Diagnosis of geohelminths was confirmed by the recovery of their eggs and larvae with other protozoa by different parasitological methods. The modified baermann method was found to be more efficient in detection of geohelminths larvae than charcoal culture method. Among the examined sites geohelminths were much more numerous in the soil of rural areas especially in the spring and summer seasons, while the contamination of canal banks by geohelminths was the worst (80 %). An insignificant correlation was reported between the soil texture and the number of positive samples in the examined areas while the relationship was directly proportional among (moisture, PH, organic). It appeared that the most common geohelminthic stage was Toxocara spp. eggs besides other types of protozoa especially Balantidium coli cysts. This suggests that factors other than soil texture are important in the prevalence of geohelminths in the soil e.g. temperature, moisture, PH and organic matter. So, to change some of these factors in a trial to control geoparasites transmission but with keeping the environment should be tried. These results also open the way to further studies to highlight the mutual affection between inhabitants of these sites and the prevalence of these geoparasites.

Keywords: Ascaris; Egypt; Geohelminths; Hookworms; Moisture; Organic matter; PH; Sharkyia; Soil; Strongyloides; Temperature; Toxocara

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