If you are concerned about taking a vaccine, and are facing some kind of mandate that requires vaccination, here are two suggestions for getting an exemption – medical and religious. As an Orthodox Christian, you qualify for a religious exemption to the Pfizer and Moderna vaccines. (Assuming the law / regulations where you are recognize freedom of religion. If not, a medical exemption is a good back-up plan.)
https://orthodoxreflections.com/exemptions-to-covid-vaccines-for-orthodox-christians/