A 10-Year Epidemiological Study of Human Cystic Echinococcosis in Qazvin Province, Iran

authors:

avatar Amin Yazdani 1 , avatar Behnaz Familsatarian 1 , avatar Hadi Bagheri ORCID 2 , avatar alireza Mohammadzade 3 , avatar Zahra Hosseinkhani ORCID 4 , *

Medical Microbiology Research Center, Qazvin University of Medical Science, Qazvin, Iran.
Children Growth Research Center, Research Institute for Prevention of Non-communicable Diseases, Qazvin University of Medical Sciences, Qazvin, Iran.
Thoracic Research Development Unit, Velayat Hospital, Qazvin University of Medical Science, Qazvin, Iran.
Metabolic Diseases Research Center, Research Institute for Prevention of Non-communicable Diseases, Qazvin University of Medical Sciences, Qazvin, Iran.

how to cite: Yazdani A, Familsatarian B, Bagheri H, Mohammadzade A, Hosseinkhani Z. A 10-Year Epidemiological Study of Human Cystic Echinococcosis in Qazvin Province, Iran. J Inflamm Dis. 2021;25(3):e156292. 

Abstract

Background: Cystic echinococcosis (CE) is a parasitic infection with significant health problems and economic burden in most of developing countries. The current study aims to investigate the 10-year prevalence of human CE and the demographic and clinical characteristics of operated patients in Qazvin province, Iran. Methods: In this cross-sectional study, the medical records of CE patients who had undergone surgery in two hospitals of Qazvin Province from 2009 to 2019 were studied. Findings: There was 203 CE cases in ten years, corresponding to a surgical incidence rate of 1.49 in 100,000 people. Of these, 99(48.8%) were male, and 104 (51.2%) were female. Patients’ age ranged from 8 to 86 years, with a mean age of 43±19.16 years. A significantly higher CE incidence was reported in patients aged 20-40 years. The majority of patients were housekeeper (48.8%), and the CE was diagnosed in almost all patients by imaging techniques. Involved organs were liver (n=119, 58.6%) and lungs (n=64, 31.5%), and their concurrent involvement was 4.5% (n=9). The highest CE incidence was recorded in 2015 (n=35, 17.2%). Affected organ and number of cysts had significant association with the CE recurrence in operated patients. Conclusion: The CE has had a uneven incidence trend in Qazvin Province during 2009-2019. A further epidemiological study is recommended to evaluate more risk factors of CE for its control in this area.