[{"arm_notes": "nan", "treatment_id": null, "treatment_name": "SARS-CoV-2 variant mRNA vaccine high dose", "treatment_type": "Biological", "pharmacological_treatment": "Non pharmacological treatment"}, {"arm_notes": "nan", "treatment_id": null, "treatment_name": "SARS-CoV-2 variant mRNA vaccine high dose", "treatment_type": "Biological", "pharmacological_treatment": "Non pharmacological treatment"}, {"arm_notes": "nan", "treatment_id": null, "treatment_name": "SARS-CoV-2 variant mRNA vaccine high dose", "treatment_type": "Biological", "pharmacological_treatment": "Non pharmacological treatment"}, {"arm_notes": "nan", "treatment_id": null, "treatment_name": "SARS-CoV-2 variant mRNA vaccine low dose", "treatment_type": "Biological", "pharmacological_treatment": "Non pharmacological treatment"}, {"arm_notes": "nan", "treatment_id": null, "treatment_name": "SARS-CoV-2 variant mRNA vaccine low dose", "treatment_type": "Biological", "pharmacological_treatment": "Non pharmacological treatment"}, {"arm_notes": "nan", "treatment_id": null, "treatment_name": "SARS-CoV-2 variant mRNA vaccine low dose", "treatment_type": "Biological", "pharmacological_treatment": "Non pharmacological treatment"}]

[{"arm_notes": "low dose; two doses of study vaccine", "treatment_id": 2640, "treatment_name": "Sars-cov-2 variant mrna vaccine", "treatment_type": "Rna based vaccine", "pharmacological_treatment": "Vaccine"}, {"arm_notes": "high dose; two doses of study vaccine", "treatment_id": 2640, "treatment_name": "Sars-cov-2 variant mrna vaccine", "treatment_type": "Rna based vaccine", "pharmacological_treatment": "Vaccine"}, {"arm_notes": "low dose; 2 dose of COVID-19 inactivated vaccines will vaccinate 1 doses of study vaccine", "treatment_id": 2640, "treatment_name": "Sars-cov-2 variant mrna vaccine", "treatment_type": "Rna based vaccine", "pharmacological_treatment": "Vaccine"}, {"arm_notes": "high dose; 2 dose of COVID-19 inactivated vaccines will vaccinate 1 doses of study vaccine", "treatment_id": 2640, "treatment_name": "Sars-cov-2 variant mrna vaccine", "treatment_type": "Rna based vaccine", "pharmacological_treatment": "Vaccine"}, {"arm_notes": "low dose; 2 dose of COVID-19 mRNA vaccines will vaccinate 1 doses of study vaccine", "treatment_id": 2640, "treatment_name": "Sars-cov-2 variant mrna vaccine", "treatment_type": "Rna based vaccine", "pharmacological_treatment": "Vaccine"}, {"arm_notes": "high dose; 2 dose of COVID-19 mRNA vaccines will vaccinate 1 doses of study vaccine", "treatment_id": 2640, "treatment_name": "Sars-cov-2 variant mrna vaccine", "treatment_type": "Rna based vaccine", "pharmacological_treatment": "Vaccine"}]