[{"arm_notes": "", "treatment_id": null, "treatment_name": "The participant will receive vaccine ChAdOx1 0.25 mL intramuscularly.;The participant will receive vaccine ChAdOx1 0.5 mL intramuscularly.;Experimental Biological/Vaccine;Active Comparator Biological/Vaccine;Low dose ;Standard Dose", "treatment_type": "TODO", "pharmacological_treatment": "TODO"}]

[{"arm_notes": "Dose 1 and 2 Coronavac; Booster ChAdOx1 0.25 mL (low dose)", "treatment_id": 161, "treatment_name": "Chadox1 ncov-19", "treatment_type": "Non replicating viral vector", "pharmacological_treatment": "Vaccine"}, {"arm_notes": "Dose 1 and 2 Coronavac; Booster ChAdOx1 0.5 mL (standard dose)", "treatment_id": 161, "treatment_name": "Chadox1 ncov-19", "treatment_type": "Non replicating viral vector", "pharmacological_treatment": "Vaccine"}]