evaluation of the effect of covid-19 vaccine in preventing covid-19 infection in hemodialysis patients

Introduction: the covid-19 disease caused a global pandemic in a short period of time. one of the reasons for the high prevalence of this disease, especially in iran, was the lack of a vaccine to prevent the disease. because, due to the drugs used and the hemodialysis method, these patients were more susceptible to covid-19 disease. therefore, this study was conducted with the aim of evaluation of the effect of covid-19 vaccine in preventing covid-19 infection in hemodialysis patientsmethodology: this cross-sectional descriptive study was conducted on 240 hemodialysis patients referred to hospitals of tehran university of medical sciences in 2023 using cluster sampling. the data collection tool was a checklist of vaccination history, type of vaccine, number of vaccine doses, and history of covid-19 infection. the information was collected through self-reporting and entered into spss21 statistical software. descriptive statistics (table, mean, standard deviation) and inferential statistics (fisher's test) were used for data analysis.results: 2.39% of hemodialysis patients contracted covid-19. the infection rate was lower in those who had received a full vaccine dose. 35.4% of patients had received the astrazeneca vaccine. the effectiveness of the sputnik vaccine was lower than other vaccines.conclusion: given that hemodialysis patients are considered to be a susceptible and high-risk group in terms of contracting covid-19, completing the covid vaccine dose is considered essential. in this group of patients, the type of vaccine should be selected based on the patient's antibody level, as recommended by a physician.