Age between 18 and 50 years old Healthy in terms of past medical history, physical examination, and laboratory data- Body mass index: 17-35 kg/m2 Willingness to participate in the study and complete follow-up Ability to comprehend study methodology Ability to comprehend and sign informed consent- Provision of consent to access medical documents in case of contracting COVID-19 For women: negative pregnancy screening Acceptance of contraception use from 21 days before randomization until six months after receiving the last vaccine dose Acceptance of not receiving blood product or bone marrow from randomization until three months after receiving last vaccine dose

Age between 18 and 50 years old Healthy in terms of past medical history, physical examination, and laboratory data- Body mass index: 17-35 kg/m2 Willingness to participate in the study and complete follow-up Ability to comprehend study methodology Ability to comprehend and sign informed consent- Provision of consent to access medical documents in case of contracting COVID-19 For women: negative pregnancy screening Acceptance of contraception use from 21 days before randomization until six months after receiving the last vaccine dose Acceptance of not receiving blood product or bone marrow from randomization until three months after receiving last vaccine dose