[{"arm_notes": "nan", "treatment_id": null, "treatment_name": "Heterologous booster", "treatment_type": "Biological", "pharmacological_treatment": "Non pharmacological treatment"}, {"arm_notes": "nan", "treatment_id": null, "treatment_name": "Homologous booster", "treatment_type": "Biological", "pharmacological_treatment": "Non pharmacological treatment"}]

[{"arm_notes": "Homologous booster", "treatment_id": 222, "treatment_name": "Bnt162b2", "treatment_type": "Rna based vaccine", "pharmacological_treatment": "Vaccine"}, {"arm_notes": "Homologous booster", "treatment_id": 824, "treatment_name": "Mrna-1273", "treatment_type": "Rna based vaccine", "pharmacological_treatment": "Vaccine"}, {"arm_notes": "Homologous booster", "treatment_id": 24, "treatment_name": "Ad26.cov2.s", "treatment_type": "Non replicating viral vector", "pharmacological_treatment": "Vaccine"}, {"arm_notes": "Heterologous booster; prior vaccinated with Ad26.COV2.S", "treatment_id": 222, "treatment_name": "Bnt162b2", "treatment_type": "Rna based vaccine", "pharmacological_treatment": "Vaccine"}, {"arm_notes": "Heterologous booster; prior vaccinated with Ad26.COV2.S", "treatment_id": 824, "treatment_name": "Mrna-1273", "treatment_type": "Rna based vaccine", "pharmacological_treatment": "Vaccine"}, {"arm_notes": "Heterologous booster; prior vaccinated with BNT162b2", "treatment_id": 24, "treatment_name": "Ad26.cov2.s", "treatment_type": "Non replicating viral vector", "pharmacological_treatment": "Vaccine"}, {"arm_notes": "Heterologous booster; prior vaccinated with BNT162b2", "treatment_id": 824, "treatment_name": "Mrna-1273", "treatment_type": "Rna based vaccine", "pharmacological_treatment": "Vaccine"}, {"arm_notes": "Heterologous booster; prior vaccinated with mRNA-1273", "treatment_id": 24, "treatment_name": "Ad26.cov2.s", "treatment_type": "Non replicating viral vector", "pharmacological_treatment": "Vaccine"}, {"arm_notes": "Heterologous booster; prior vaccinated with mRNA-1273", "treatment_id": 222, "treatment_name": "Bnt162b2", "treatment_type": "Rna based vaccine", "pharmacological_treatment": "Vaccine"}]