Background During the first month of 2020 and the outbreak of a new coronavirus disease (COVID-19), Almazar District Sanitry, Epidemiological Welfare, and Public Health Service (Service) staff took the necessary measures to prevent the disease. The purpose of the research is to evaluate the effectiveness of the work performed by the Sanitary Epidemiological Welfare and Public Health Service and public health staff during this pandemic by analyzing the epidemiological chart and survey. Methods A retrospective study of 1900 “epidemiological cards” from the epidemiology department of the Sanitary Epidemiological Welfare and Public Health Service activity in Almazar district and a questionnaire to its staff and employees was selected based on the analysis of the epidemiological investigation was conducted. The questionnaire was selected using Google Docs, and in Google Docs the questionnaire was created and sent through social media channels. A Likert scale was used to mark (1=yes, 2=partially, 3=no, 4=difficult to answer). The data from the sanitary epidemiologicalWelfare and Health service were analyzed using the SPSS program. Results A sample from an analysis of the epidemiological cards obtained from the Almazar District Epidemiology Department showed that patients were infected from workplaces and family members, where they were the main carriers of the disease. 96.2% of patients had a symptomatic course, and patients mainly had symptoms of fever, olfaction and taste disorders, weakness, and headache. The vast majority of patients, 90%, were treated at home. The average day of the epidemiological investigation was 1.6 days. Patients showed that they interacted with an average of 5 people. Patients showed an average of 4 days of symptom onset. The Service staff were satisfied with the measures taken by the Government to prevent coronavirus during the pandemic. 61.1% of employees reported that they were provided with PPE in a timely manner. Almost half of the employees (52.8%) reported that the provision of modern equipment helped to speed up the work process of providing modern equipment. Participants sampled from the epidemiological chart analysis (72.5%) reported that staff of the service used a special PPE during the pandemic to conduct epidemiological investigation and analysis and disinfection. Awareness of coronavirus among the personnel and rapid identification of those who had contacted with patients revealed that about half of the workers responded that 57.8% were satisfied with the measures taken.