[{"arm_notes": "nan", "treatment_id": null, "treatment_name": "Experimental vaccine 1", "treatment_type": "Biological", "pharmacological_treatment": "Non pharmacological treatment"}, {"arm_notes": "nan", "treatment_id": null, "treatment_name": "Experimental vaccine 1", "treatment_type": "Biological", "pharmacological_treatment": "Non pharmacological treatment"}, {"arm_notes": "nan", "treatment_id": null, "treatment_name": "Experimental vaccine 1", "treatment_type": "Biological", "pharmacological_treatment": "Non pharmacological treatment"}, {"arm_notes": "nan", "treatment_id": null, "treatment_name": "Experimental vaccine 2", "treatment_type": "Biological", "pharmacological_treatment": "Non pharmacological treatment"}, {"arm_notes": "nan", "treatment_id": null, "treatment_name": "Experimental vaccine 3", "treatment_type": "Biological", "pharmacological_treatment": "Non pharmacological treatment"}]

[{"arm_notes": "600SU;previously received Coronavac", "treatment_id": 327, "treatment_name": "Coronavac", "treatment_type": "Inactivated virus", "pharmacological_treatment": "Vaccine"}, {"arm_notes": "600SU;previously received Bbibp-corv", "treatment_id": 327, "treatment_name": "Coronavac", "treatment_type": "Inactivated virus", "pharmacological_treatment": "Vaccine"}, {"arm_notes": "4ug;previously received Bbibp-corv", "treatment_id": 184, "treatment_name": "Bbibp-corv", "treatment_type": "Inactivated virus", "pharmacological_treatment": "Vaccine"}, {"arm_notes": "600SU;previously received Inactivated sars-cov-2 vaccine (vero cell)", "treatment_id": 327, "treatment_name": "Coronavac", "treatment_type": "Inactivated virus", "pharmacological_treatment": "Vaccine"}, {"arm_notes": "200WU; previously received Inactivated sars-cov-2 vaccine (vero cell)", "treatment_id": 1923, "treatment_name": "Inactivated sars-cov-2 vaccine (vero cell)", "treatment_type": "Inactivated virus", "pharmacological_treatment": "Vaccine"}]