Abstract
Background and Aim: Human cystic echinococcosis (CE) is an important, neglected zoonotic disease with worldwide distribution which has been reported in different regions of Iran, including the central areas (e.g. Qom Province). The disease is caused by the Echinococcus granulosus parasite living in the intestine of dogs and other canids as definitive hosts. This study aimed to investigate the epidemiology, burden, and geographical distribution of CE in Qom Province, Central Iran. Materials and Methods: In this descriptive-analytic study, the data of patients with diagnosed CE during 2011-2018 were collected from all urban and rural areas of Qom Province. The data of the epidemiological status of CE cases were extracted from the CE surveillance system in the Centers for Disease Control and Prevention in the Qom University of Medical Sciences which is owned and run by Iran's Ministry of Health and Medical Education. In addition, the economic burden of the disease was evaluated by Azarakhsh and Roozamad financial software; the geographical distribution of CE was obtained by ArcGIS 10.3 software (IBM Corp., Chicago, USA). Results: The results reveal that the incidence rate of CE was 6.81/100,000 people over the 8-year period of the study. More than half of the cases were females (57.95%), housewives (57.47%), and residents (89.77%). The majority of the cases were Iranian (88.77%) and the rest were from the two neighboring countries: Afghanistan and Pakistan. The economic burden of the human CE in the 8 years was estimated to be 3,761,352,526 rials (75,227 $). In terms of spatial distribution, the highest incidence rate of CE was observed in Salafchegan District in the southwest of Qom Province. Conclusion: The economic burden of human CE infection provided by governmental health-care systems or as out-of-pocket expenses is relatively high, and housewives, especially those living in Salafchegan District, are more likely to be affected. More studies are recommended on different epidemiological aspects and the definitive hosts of the parasite; besides, people at risk need to be warned and educated so that the incidence rate of the disease is reduced.
Highlights
Cystic echinococcosis (CE), known as hydatid disease or hydatidosis, is a zoonotic parasitic disease caused by the larval stage of Echinococcus granulosus
In terms of spatial distribution, the highest incidence rate of cystic echinococcosis (CE) was observed in Salafchegan District in the southwest of Qom Province
The economic burden of human CE infection provided by governmental health-care systems or as out-ofpocket expenses is relatively high, and housewives, especially those living in Salafchegan District, are more likely to be affected
Summary
Cystic echinococcosis (CE), known as hydatid disease or hydatidosis, is a zoonotic parasitic disease caused by the larval stage of Echinococcus granulosus. E. granulosus has different strains that can impact the epidemiology and distribution of CE infection. The Creative Commons Public Domain Dedication waiver (http:// creativecommons.org/ publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated. Human cystic echinococcosis (CE) is an important, neglected zoonotic disease with worldwide distribution which has been reported in different regions of Iran, including the central areas (e.g. Qom Province). The disease is caused by the Echinococcus granulosus parasite living in the intestine of dogs and other canids as definitive hosts. This study aimed to investigate the epidemiology, burden, and geographical distribution of CE in Qom Province, Central Iran
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