[{"arm_notes": "", "treatment_id": null, "treatment_name": "Study setting: Public sector medical college Rawalpindi.Intervention of Ad5-nCoV and mRNA-1273 vaccine is planned . Name of vaccine administered: Ad5-nCoV and mRNA-1273 vaccine. Strength and volume: 0.5 ml of Ad5-nCoV and 0.25 ml of mRNA-1273Route of administration: Intramuscular.Intervention is planned by Public sector medical college. It is a controlled study with absence of active control group. Participants history of vaccine reactogencity with homologous first booster dose will be compared with reactogenicity of heterologous second vaccine booster intervention. Homologous first booster dose reactogenicity of BBIBP-CorV will be control group in this study. Intervention of Ad5-nCoV and mRNA-1273 vaccine will be planned and they both will serves as intervention group.College medical facility is well equipped with every health care facility possible and is capable to cope up with mild to severe reactions. The participants will be given symptomatic relief for milder vaccine reactions. Severe vaccine reactions will be dealt with recommended medical guidelines.", "treatment_type": "TODO", "pharmacological_treatment": "TODO"}]

[{"arm_notes": "homologous first booster dose", "treatment_id": 26, "treatment_name": "Ad5-ncov", "treatment_type": "Non replicating viral vector", "pharmacological_treatment": "Vaccine"}, {"arm_notes": "homologous first booster dose", "treatment_id": 824, "treatment_name": "Mrna-1273", "treatment_type": "Rna based vaccine", "pharmacological_treatment": "Vaccine"}]