Md Aktaruzzaman, Majedul Hoque, Rahamat Ullah, Avijit Saha, Md Nahid Hasan and Tanzim Amin Borhan 2023. An investigation of a comparative study among different age groups about the acceptance and concern of covid-19 vaccine in Bangladesh. Pakistan’s Multidisciplinary Journal for Arts & Science. 4, 03 (Nov. 2023), 27–42. DOI:https://doi.org/10.5281/zenodo.10199943.