Epidemiology of COVID-19 in patients referred to health centers in the Nahavand city, western Iran

Background : Considering the need and importance of a comprehensive study of the disease of COVID-19, this research investigated the epidemiology of COVID-19 in Nahavand, a western city of Iran, from March 2020 to the end of the 20th. March 2021. Methods: This study is a retrospective study. Information on the epidemiology of COVID-19 was collected by the Infectious Diseases Department of the Nahavand Health Center. A logistic regression model was used to estimate the disease. All data in this study were analyzed using SPSS version 16 software. The presented statistics related to referrals to health centers with the result of a positive RT-PCR test. Results: The RT-PCR test was positive in 3544 patients and the average age of the patients was 47 years, also 49.4% of patients (n=1753) were men. Seventy eight percent of adult deaths occurred in people over 60 years old and 56.29% in men. Out of all the patients, 27.12 percent had an underlying disease that 6.7% died. No deaths of children under 12 and pregnant women were reported. The association between travel history, patient contacts, underlying disease and pregnancy for COVID-19 was significant ( P < 0.001). Conclusion : The most important point to mention in this study is the effect of increasing age, underlying disease and male gender on increasing hospitalization and death due to COVID-19. Approximately 1.77% of Nahavand residents fell ill with COVID-19 in a defined period of time. More than 95% of patients were older than 20 years.