Parasitic contamination of environmental objects of the Astrakhan region with helminths and protozoa

Abstract

The article studies and analyzes the sanitary and parasitological state of environmental objects in the Astrakhan region (flushes, water, soil) for 2016–2020. The share of samples taken from environmental objects in the structure of sanitary and parasitological studies was 88.6 %. The largest number of samples was for flushes from hard surfaces — 31 740 (82.7 %), of which 1 (0.003 %) sample did not meet the sanitary and parasitologic standards. Teniidoncospheres were found in this sample (a positive finding was noted in 2019). The share of soil samples in the structure of all sanitary and parasitological studies was 4146 (10.8 %), of which 271 (6.5 %) were unsatisfactory. Water was collected from various water bodies: centralized water supply facilities — 600 (23.9 %), surface water bodies — 676 (26.9 %), swimming pools — 955 (38.1 %), waste water — 247 (9.9 %). Also, along with waste water, their sediment was also studied — 29 (1.2 %). As a result of the work done, it was concluded that the parasitic contamination of environmental objects in the Astrakhan region continues to remain tense, as evidenced by the above indicators; the most contaminated object of the environment with parasitic agents is the soil, as evidenced by its contamination, equal to 6.5 % (water-3.6 %, flushes-0.003 %); in most cases, contamination of the soil and water of the Astrakhan region belongs to the eggs of toxocars and larvae of stroniglids, and the presence of pathogens of intestinal parasitosis in the soil and water is a potential threat to public health.