short-term side effects of mrna-based covid-19 vaccine among jordanian population; a cross-sectional study

Introduction: one type of the developed covid-19 vaccines that received emergency permission and was approved by the food and drug administration (fda) is the mrna-based vaccine. the aim of this study is to gather information on the jordanian population's experience with the vaccine's side effects. methods: the study objectives were addressed through a cross-sectional study, which collected information regarding the short-term side effects experienced by the vaccinated individuals within one month following the injection of an mrna-based covid-19 vaccine. data collection was carried out in august 2021. participants were invited to take part in a self-administered web-based survey created using google forms. results: among the study’s participants (n= 533), about 56% experienced side effects after the first dose of the mrna-based covid-19 vaccine. the most commonly reported side effects after the first dose were sore arm at the injection site (91.6%), and fatigue (83.06%). the female gender was significantly associated with experiencing fatigue, discomfort, chills, and hair loss. being over 30 years old was significantly associated with experiencing cough. being a smoker was significantly associated with experiencing shortness of breath and gastrointestinal symptoms. conclusion: the mrna-based covid-19 vaccine side effects were common, yet, mild, local, and self-limited. the local pain at the injection site was the most commonly reported side effect. hopefully, the study's findings will aid in lowering resistance to vaccination.