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[{"arm_notes": "1 or 2", "treatment_id": 2187, "treatment_name": "Placebo", "treatment_type": "Placebo", "pharmacological_treatment": "Placebo"}, {"arm_notes": "low dose;2;21 days apart (adults)", "treatment_id": 221, "treatment_name": "Bnt162b1", "treatment_type": "Rna based vaccine", "pharmacological_treatment": "Vaccine"}, {"arm_notes": "high dose;2;21 days apart (elderly)", "treatment_id": 221, "treatment_name": "Bnt162b1", "treatment_type": "Rna based vaccine", "pharmacological_treatment": "Vaccine"}]