Prevalence of human blastocystosis in the region of Mila, correlation with abiotic factors.

Abstract

In order to determine the epidemiological and clinical characteristics of Blastocystis hominis in the region of Mila, we developed a retrospective study during a period extending from January (2012 to December 2022), and the other prospective during three-months (January-March 2023). We collected the data at the level of parasitology-mycology laboratory of the General Hospital Maglaoui Brothers Mila, for the retrospective escriptive analytical study we treated 12941 examinations, 2356 were positive, an infestation rate of 18%. -Of the positive cases, 57.51% were male and 42.48% were female. - Patients aged (20-44 years) are the most exposed to this type of parasitism . -The years 2019, 2021 and 2022 had the highest infection rates, 22.62 %, 20.92% and 19.31% respectively. -The highest number of parasitized cases noted during the Autumn season followed by winter.-A high rate of this Blastocystis hominis was noted during the months of October,September. -The highest number of parasitized cases noted during the Autumn season followed by winter. -The climatic conditions of Mila region, like the ambient temperature increase the dissemination of the bacteria. Sunshine duration, average humidity, precipitation, and average monthly wind speed cause a decrease in the bacterial index of Blastocystis hominis. The results obtained during the three months of our prospective study (January- March 2023), confirmed what we deduced from the results above (The retrospective study from 2012 to 2022).