Sanitary and parasitological state of water bodies of the Astrakhan region for 2011–2020

2021 ◽  
pp. 14-24
Author(s):  
Svetlana Aleksandrovna Shemetova ◽  
Tatyana Vasilievna Nikeshina ◽  
Nina Vitalievna Polyanskaya ◽  
Gennadiy Leonidovich Shendo ◽  
Rudolf Sergeevich Arakelyan ◽  
...  
Keyword(s):  
Water Samples ◽  
Water Bodies ◽  
Swimming Pools ◽  
Laboratory Studies ◽  
Intestinal Protozoa ◽  
Infected People ◽  
Environmental Objects ◽  
State Of Water ◽  
Data Objects ◽  
Eggs And Larvae

The article presents the material on the sanitary-parasitological state of water bodies of the Astrakhan region for 2011–2020. In total, during the analyzed period, laboratory studies were conducted on 77,017 samples taken from environmental objects (soil, water, flushes from solid household surfaces). The share of water samples in the structure of general sanitary and parasitological studies of the environment was 7.6 % (5858 samples), including unsatisfactory samples was 3.0 % (175 samples). The structure of positive findings in water samples was represented by 6 nosological forms of helminthiasis — 88.0 % (154 samples) and 3 nosoforms of protozoa — 12.0 %. Water samples were taken from various sources in Astrakhan and the Astrakhan region and examined for the presence of eggs and larvae of helminths, cysts of pathogenic intestinal protozoa and oocysts of cryptosporidia: water from open reservoirs, centralized water supply, swimming pools, waste water, water from wells and bottled water. As a result of the conducted studies, the results were obtained, indicating that the parasitic contamination of water bodies of the Astrakhan region remains very intense, as evidenced by positive findings in the form of eggs and larvae of helminths and cysts of pathogenic intestinal protozoa; the presence in the studied water samples of eggs and larvae of helminths and pathogenic protozoa cysts, evidence of the contamination of these objects feces of infected people (eggs broad tapeworm, Ascaris, opisthorchis, pinworms, Giardia cysts, amoebas and blastocyst) and animals (egg opistorchis, Toxocara, larvae strongylid); the presence of positive findings in the sewage samples indicates poor disinfestation data objects; the presence of parasitic agents in water samples taken from open reservoirs indicates that they are contaminated with the feces of infected animals and people, or that the object is contaminated with sewage and / or sewage.

Sanitary and parasitological state of water bodites in the Аstrakhan region

2020 ◽  
Vol 22 (4) ◽  
pp. 168-171
Author(s):  
R. S. Arakelyan ◽  
G. L. Shendo
Keyword(s):  
Water Supply ◽  
Water Samples ◽  
Sewage Treatment ◽  
Open Water ◽  
Water Bodies ◽  
Intestinal Protozoa ◽  
Environmental Objects ◽  
State Of Water ◽  
Swimming Pool Water ◽  
Wastewater Samples

The article analyzes the sanitary and parasitological state of water bodies in the Astrakhan region in 20152019. A total of 16683 laboratory studies of water samples were conducted during the analyzed period. The number of samples taken from various environmental objects was 15253 (91,4%), of which 2595 (17%) were water samples taken from various water bodies. Of the last 82 (3,2%), samples did not meet sanitary standards. Centralized water supply was tested for parasitic contamination in 666 (25,7%) samples, swimming pool water in 947 (36,5%) samples, open water (river water) in 696 (26,8%) and wastewater in 286 (11%) samples. Of the 635 (24,5%) water samples collected in 2015, 14 (2,2%) did not meet hygiene standards. Of the 671 (25,9%) samples taken in 2016, 32 (4,8%) samples showed positive findings. Percentage of water samples collected and examined in 2017 it accounted for 463 (17,8%) of all water samples studied during the analyzed period, of which 14 (3%) did not meet sanitary standards. The share of water samples selected and tested for parasitic indicators in 2018 was 518 (22,4%), of which 18 (3,5%) samples did not meet the hygiene standards. In 2019, compared to previous years, the number of water samples taken for parasitic indicators decreased several times and amounted to 308 (11,9%), of which positive findings were noted in 4 (1,3%) samples. The absence of positive findings in water samples taken from Central water supply facilities indicates high-quality filtration and prevention of these facilities. The presence of cysts of pathogenic intestinal protozoa, as well as eggs and larvae of helminths in water samples taken from swimming pools and open reservoirs indicates fecal contamination of these objects. The presence of positive findings in wastewater samples indicates that sewage treatment plants do not provide reliable deworming and disinfection of wastewater.

scholarly journals Contamination of environmental objects by helminth-protozoan infestations in Astrakhan region. Аnalysis of activities of “Сenter for hygiene and epidemiology in Astrakhan region” for 2011–2020

2021 ◽  
Vol 38 (5) ◽  
pp. 123-136
Author(s):  
Svetlana A. Shemetova ◽  
Rudolf S. Arakelyuan ◽  
Tatyana V. Nikeshina ◽  
Gennadyi L. Shendo ◽  
Altin K. Mukasheva ◽  
...  
Keyword(s):  
Soil Water ◽  
Water Samples ◽  
Poor Quality ◽  
Soil Samples ◽  
Laboratory Studies ◽  
Intestinal Protozoa ◽  
Environmental Objects ◽  
Helminth Eggs ◽  
Wastewater Samples ◽  
Soil And Water

Objective. To study and analyze the contamination of environmental objects in the Astrakhan Region (by the example of soil, water, and washout samples from solid household surfaces) based on the results of laboratory studies of the Center for Hygiene and Epidemiology in the Astrakhan Region for 20112020. Materials and methods. The work was carried out on the basis of the Laboratory of Bacteriological and Parasitological Research of the Center for Hygiene and Epidemiology in the Astrakhan Region and in the laboratories of the Branches of the Center for Hygiene and Epidemiology in the Astrakhan Region in 20112020. As a whole, during the analyzed period, the laboratory and its branches conducted laboratory studies of 79 742 samples taken from various environmental objects, and 94 495 studies were performed. The number of samples that do not meet the hygiene standards was 1.01 % (806 samples). Results. The objects of sampling for the study of their parasitic purity were water, soil and wash-out from solid household surfaces. The share of water samples in the structure of all the studied samples taken from environmental objects was 7.3 % (5858 samples), of which 172 samples were contaminated with pathogens of parasitic diseases, the extent of invasion was 2.9 %. The structure of positive findings in the water samples was represented by 6 nosological forms of helminths 88.0 % (154 samples) and 3 nosoforms of protozoa 12.0 %. The share of the studied soil samples in the overall structure of sanitary and parasitological studies of the environment was 11.2 % (8895 samples). The number of unsatisfactory samples in the structure of all positive findings revealed during the study of soil, water and washouts during the analyzed period was 70.4 % (625 samples). The total soil contamination for the period of 20112020 was 7.0 % (625 samples). In most cases, helminth eggs and larvae were detected 99.8 % (624 samples). The proportion of pathogenic protozoan cysts detected in the soil was 0.2 % (1 sample). In addition to water and soil samples, the washout samples, taken from solid household surfaces were studied 81.5 % (64989 samples), of which 0.01 % (9 samples) were unsatisfactory. All positive findings in the washout samples were represented by two nosological forms of helminthiasis: Enterobius vermicularis eggs 0.012 % (8 samples) and teniid oncospheres 0.002 (1 sample). Conclusions. The presence of helminth eggs and cysts of pathogenic intestinal protozoa in the studied soil and water samples indicates contamination of these objects with the feces of infected persons and/or contamination by sewage runoff resulting from various accidents. The presence of toxocara eggs and strongylid larvae in the soil and water indicates contamination of these objects with the feces of infected animals (dogs, cats). The presence of positive findings in wastewater samples indicates poor-quality disinfection of these objects. The presence of contact helminth eggs in the studied samples of washout samples taken from hard surfaces indicates direct contact of infected persons with these samples.

Sanitary parasitological and sanitary–bacteriological condition of the soil in the astrakhan region

2021 ◽  
Vol 23 (3) ◽  
pp. 35-40
Author(s):  
Rudolf S. Arakelian ◽  
Svetlana A. Shemetova ◽  
Olga A. Vanyukova ◽  
Gennadiy L. Shendo ◽  
Nina V. Polyanskaya ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Pathogenic Bacteria ◽  
Strongyloides Stercoralis ◽  
Toxocara Canis ◽  
Soil Samples ◽  
Coliform Bacteria ◽  
Infected People ◽  
Environmental Objects ◽  
Sanitary Condition ◽  
Eggs And Larvae

This article analyzes the sanitaryparasitological and sanitarybacteriological state of the soil of the Astrakhan region for 2015 to 2019. In total, 7587 soil samples taken from various environmental objects were studied, and 18.197 studies have been performed. Of the samples, 333 (4.4%) samples did not meet the hygiene standards. For parasitic purity, 4566 (60.2%) soil samples were examined, and 9132 (50.2%) studies have been performed. The largest number of soil samples were collected and examined in 2015 and 2016, which amounted to 943 (20.7%) in 2015 and 1046 (22.9%) in 2016. The number of samples that do not meet hygienic standards was 62 (6.6%) in 2015 and 91 (8.7%) in 2016. In 2015, the positive findings were helminthiasis caused by unfertilized eggs of Ascaris lumbricoides (4 [0.5%]), eggs of Toxocara canis (37 [3.9%]), and larvae of Strongyloides stercoralis (21 [2.2%]). For microbiological indicators, the largest number of soil samples were collected and examined in 2019 and amounted to 694 (23.0%), of which positive findings in the form of common coliform bacteria of Escherichia coli amounted to six (0.9%). Studies for bacteriological indicators in 2016 have used 662 (21.9%) samples, which is 0.9 times less than the samples taken in 2019. The sanitary condition of the soil of the Astrakhan region remains stably tense, as evidenced by positive findings in the form of eggs and larvae of helminths, as well as pathogenic bacteria of Escherichia coli. The presence of ascarid eggs, toxocars, and strongylid larvae in the soil indicates contamination of these objects with the feces of infected people and animals. The presence of coliform bacteria of Escherichia coli in the soil also indicates contamination with the feces of sick people.

scholarly journals CONTAMINATION OF SOIL IN RURAL AREAS OF THE ASTRAKHAN REGION EGGS AND LARVAE OF HELMINTHS

2020 ◽  
Vol 76 (4) ◽  
pp. 117-123
Author(s):  
V.A. Irdeeva ◽  
◽  
R.S. Arakelyan ◽  
Kh.M. Galimzyanov ◽  
M.V. Bogdanyunc ◽  
...  
Keyword(s):  
Rural Areas ◽  
Strongyloides Stercoralis ◽  
Toxocara Canis ◽  
Soil Samples ◽  
Intestinal Protozoa ◽  
Infected People ◽  
Eggs And Larvae

The parasitic contamination of the soil of rural areas of the Astrakhan region for the presence of eggs and larvae of helminths and cysts of pathogenic intestinal protozoa was studied. The highest number of unsatisfactory soil samples was observed in the Limansky district of the Astrakhan region – 12.2 %, when dead larvae of Strongyloides stercoralis and unfertilized eggs of Askaris lumbricoides were found. The presence of Toxocara canis eggs and dead Strongyloides stercoralis larvae in the soil indicates contamination of this object with the feces of invasive animals. The presence of unfertilized eggs of Askaris lumbricoides in soil samples taken from playgrounds in rural areas of the Astrakhan region indicates that these objects are contaminated with the feces of infected people. Contamination of soil in rural areas of the Astrakhan region eggs and larvae of helminths, in the Krasnoyarsk area above 4.1 times higher than in lymans'ke and 6.7 times compared to Kamyzyaksky

Sanitary and parasitological state of environmental objects Astrakhan Region for 2010–2019

2021 ◽  
pp. 16-27
Author(s):  
Viktoria Aleksandrovna Irdeeva ◽  
Rudolf Sergeevich Arakelyan ◽  
Gennadiy Leonidovich Shendo ◽  
Nina Vitalievna Polyanskaya ◽  
Tatyana Vasilievna Nikeshina ◽  
...  
Keyword(s):  
Soil Water ◽  
Water Samples ◽  
Strongyloides Stercoralis ◽  
Soil Samples ◽  
Environmental Objects ◽  
Eggs And Larvae

The article presents material on the sanitary and parasitological state of environmental objects of the Astrakhan region for 2010–2019 on the example of studying samples of soil, water, manure and flushes from solid household surfaces. A total of 80962 samples were collected and examined during the analyzed period. The number of samples that did not meet the standard indicators was 1.2 % (951 samples). The total share of soil samples in the structure of all studies of environmental objects was 13.2 % (10,692 samples). In addition to the soil, manure samples from farms were studied. In total, 0.04 % (33 samples) of manure were examined during the analyzed period, of which 24.2 % (8 samples) were positive findings in the form of Strongyloides stercoralis larvae. These manure samples were collected only in 2010. The share of water samples was 7.5 % (6033 samples). Also conducted research on samples of swabs taken from household hard surfaces. A total of 64,204 washout samples (79.3 %) were selected and examined, of which 0.02 % (12 samples) were positive. The result of this work were the results: sanitary-parasitological status of water and soil Astrakhan region remain strained, as evidenced by positive findings in the form of eggs and larvae of helminths and cysts of intestinal pathogenic protozoa.

scholarly journals Parasitic contamination of soil in astrakhan region. analysis of work in 2010–2019

2021 ◽  
Vol 38 (2) ◽  
pp. 126-132
Author(s):  
Viktoria A. Irdeeva ◽  
Svetlana A. Shemetova ◽  
Rudolf S. Arakelyuan ◽  
Gennadyi L. Shendo ◽  
Nina V. Polyanskaya
Keyword(s):  
Research Work ◽  
Soil Samples ◽  
Soil Sampling ◽  
Parasitic Infestation ◽  
Intestinal Protozoa ◽  
Region Analysis ◽  
Environmental Objects ◽  
Sewer Network ◽  
Eggs And Larvae

Objective. We studied the contamination of the soil with helminth-protozoan infestations in Astrakhan region for 20102019. Materials and methods. The research work was carried out in the Laboratory of Bacteriological and Parasitological Research of the Center for Hygiene and Epidemiology in the Astrakhan Region in 20102019. A total of 10 692 soil samples were examined, and 11 384 studies were performed. The number of samples, which did not meet the sanitary and parasitological indicators was 7.0 % (753 samples). Eggs and larvae of helminths, as well as cysts of pathogenic intestinal protozoa were found in these samples. Results. During the analyzed period, 86 491 samples of sanitary and parasitological studies were selected and examined in the Astrakhan region, of which 93.6 % (80 962 samples) were samples taken from various environmental objects (water, soil, manure, flushes from solid household surfaces). The total share of soil samples in the structure of all studies of environmental objects was 13.2 % (10 692 samples). Conclusions. Parasitic contamination of the soil remains tense, as evidenced by positive findings in the form of eggs and larvae of helminths, as well as cysts of pathogenic intestinal protozoa. The presence of toxocara eggs and strongylid larvae in the soil indicates contamination of this object with the feces of infected animals. The presence of eggs of ascarids, opisthorchis, pygmy tapeworm and cysts of dysentery amoeba in the soil may indicate that this object is contaminated with the feces of persons with parasitic infestation, or about accidents on the sewer network and underflooding of soil sampling sites.

SITE-SPECIFIC EQUATIONS OF STATE FOR COASTAL SEA AREAS AND INLAND WATER BODIES

2017 ◽  
Author(s):  
Natalia Andrulionis ◽  
Natalia Andrulionis ◽  
Ivan Zavialov ◽  
Ivan Zavialov ◽  
Elena Kovaleva ◽  
...  
Keyword(s):  
Equation Of State ◽  
Black Sea ◽  
Water Samples ◽  
Equations Of State ◽  
Sea Water ◽  
Ionic Composition ◽  
Water Bodies ◽  
Aral Sea ◽  
The Black Sea ◽  
Coastal Sea

This article presents a new method of laboratory density determination and construction equations of state for marine waters with various ionic compositions and salinities was developed. The validation of the method was performed using the Ocean Standard Seawater and the UNESCO thermodynamic equation of state (EOS-80). Density measurements of water samples from the Aral Sea, the Black Sea and the Issyk-Kul Lake were performed using a high-precision laboratory density meter. The obtained results were compared with the density values calculated for the considered water samples by the EOS-80 equation. It was shown that difference in ionic composition between Standard Seawater and the considered water bodies results in significant inaccuracies in determination of water density using the EOS-80 equation. Basing on the laboratory measurements of density under various salinity and temperature values we constructed a new equation of state for the Aral Sea and the Black Sea water samples and estimated errors for their coefficients.

ON THE ISSUE OF THE SPREAD OF AEROMONAS BACTERIA IN THE ENVIRONMENT AND CLINICAL MATERIAL

2018 ◽  
pp. 54-57
Author(s):  
L.V. Kataeva ◽  
T.F. Stepanova ◽  
O.V. Posoyuznykh ◽  
V.V. Tashlanova ◽  
N.F. Karpukhina ◽  
...  
Keyword(s):  
Antibiotic Resistance ◽  
Species Diversity ◽  
Food Products ◽  
Water Bodies ◽  
Clinical Material ◽  
Seasonal Fluctuations ◽  
Infectious Process ◽  
Biological Safety ◽  
Resistance To Antibiotics ◽  
Environmental Objects

The analysis of cases of detection of bacteria of the genus Aeromonas in clinical material from various loci of patients of medical organizations was carried out. Their species diversity, isolation in monoculture and associations, resistance to antibiotics and spring-autumn rises indicate the etiological significance of these microorganisms in the infectious process. To improve the biological safety of aquatic biotopes, it is important to study their microbiocenosis, in particular, the circulation of bacteria of the genus Aeromonas, in order to obtain information on pathogenic properties, antibiotic resistance, and seasonal fluctuations. To prevent the spread of Aeromonas infections, it is necessary to carry out sanitary and bacteriological studies of water bodies, environmental objects and food products.

scholarly journals New type of ponds? Changing of quantity and function of water bodies in rural built-up areas (Pilsen Region, Czechia)

2017 ◽  
Vol 9 (1) ◽  
pp. 145-162
Author(s):  
Jan Kopp ◽  
Jindřich Frajer ◽  
Marie Novotná
Keyword(s):  
Rural Area ◽  
Rural Areas ◽  
Ecological Impact ◽  
Urban System ◽  
Suburban Area ◽  
Water Bodies ◽  
Swimming Pools ◽  
Rural Settlements ◽  
Small Water ◽  
The Difference

Abstract This study is focused on the changing of areas of water bodies in selected villages of the Pilsen Region (Czechia). We researched several different types of rural settlements and three time horizons with the help of old maps, orthophoto maps and GIS tools. To capture the influence of their location within the urban system, we chose 15 places from four categories (inner suburban area, outside suburban area, rural area, periphery rural area) depending on their distance to the core of the Pilsen agglomeration. There is no significant change in the amount of water bodies between the first reference period (1838-1839) and the second period (1957-1963) in the selected settlements. However, the third period (2013-2015) is characterized by the emergence of a large number of small water bodies - swimming pools and garden ponds. Based on the results of our research we identified the declining importance of public water bodies in some of the settlements. However, we have identified a notable prevalence of garden ponds which have a more positive ecological impact than pools. The proportion of private water bodies (covered and uncovered pools and garden ponds) in the total area of water bodies in the rural settlements in most cases is less than 20%, in the suburban settlements up to 100%. Peripheral settlements have a below-average share of these water bodies. The difference between the number of pools in different settlements is related to the proportion of newly built houses there. Although there are relatively fewer pools in rural settlements, the difference compared to the situation in suburban settlements is not pronounced due to the change in lifestyle in rural areas and the change in functions of some villages to recreational areas. Influence of pools on water consumption is dependent on the individual exchange technology of water in swimming pools. Filling of the pool before the season can overload the capacity of the local water supply.

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