Abstract
Background and aims: Following the COVID-19 pandemic, the World Health Organization (WHO) recommended universal vaccination to control the pandemic. With the start of vaccination, reports of menstrual disorders were reported at the community level. Therefore, this study was conducted to determine the prevalence of menstrual disorders and their relationship with resilience of individuals following the COVID-19 vaccination. Methods: This case-control study was conducted in women aged 18-45 covered by the comprehensive health centers of Shahrekord who received the COVID-19 vaccine. Four hundred samples were selected by the two-stage sampling method. The questionnaire tool used in this study included the demographic information checklist and the Connor- Davidson Resilience scale (CD-RISC). After collecting the data, it was entered into SPSS software and analyzed using descriptive and analytical statistics. The significance level in this study was considered 0.05. Results: The present study showed a significant relationship between the presence of menstrual disorder following the vaccine in the vaccinated groups, which decreased to zero after three rounds of vaccine injection. The highest amount of menstrual disorder occurred due to the increase in the volume of bleeding and after the injection of the AstraZeneca vaccine. However, according to the results of the current study, coronavirus does not affect menstrual disorders. Also, the mean resilience score of the non-vaccinated group was significantly lower than that of the vaccinated group. However, no significant difference was reported in examining menstrual disorder and resilience. In general, resilience after contracting the disease was lower in individuals with menstrual disorders. Conclusion: The present study showed that COVID-19 infection and COVID-19 vaccination can affect the menstrual cycle in women. It is essential to be aware of menstrual changes after contracting COVID-19 and vaccination for COVID-19, as well as to warn and inform women about this issue.