[{"arm_notes": "nan", "treatment_id": null, "treatment_name": "a high-dose placebo (18-59 years) at the schedule of day 0, 28, 56", "treatment_type": "Biological", "pharmacological_treatment": "Non pharmacological treatment"}, {"arm_notes": "nan", "treatment_id": null, "treatment_name": "a high-dose placebo (60-85 years) at the schedule of day 0, 28, 56", "treatment_type": "Biological", "pharmacological_treatment": "Non pharmacological treatment"}, {"arm_notes": "nan", "treatment_id": null, "treatment_name": "a high-dose recombinant COVID-19 vaccine (CHO Cell) (18-59 years) at the schedule of day 0, 28, 56", "treatment_type": "Biological", "pharmacological_treatment": "Non pharmacological treatment"}, {"arm_notes": "nan", "treatment_id": null, "treatment_name": "a high-dose recombinant COVID-19 vaccine (CHO Cell) (60-85 years) at the schedule of day 0, 28, 56", "treatment_type": "Biological", "pharmacological_treatment": "Non pharmacological treatment"}, {"arm_notes": "nan", "treatment_id": null, "treatment_name": "a middle-dose placebo (18-59 years) at the schedule of day 0, 28, 56", "treatment_type": "Biological", "pharmacological_treatment": "Non pharmacological treatment"}, {"arm_notes": "nan", "treatment_id": null, "treatment_name": "a middle-dose placebo (60-85 years) at the schedule of day 0, 28, 56", "treatment_type": "Biological", "pharmacological_treatment": "Non pharmacological treatment"}, {"arm_notes": "nan", "treatment_id": null, "treatment_name": "a middle-dose recombinant COVID-19 vaccine (CHO Cell) (18-59 years) at the schedule of day 0, 28, 56", "treatment_type": "Biological", "pharmacological_treatment": "Non pharmacological treatment"}, {"arm_notes": "nan", "treatment_id": null, "treatment_name": "a middle-dose recombinant COVID-19 vaccine (CHO Cell) (60-85 years) at the schedule of day 0, 28, 56", "treatment_type": "Biological", "pharmacological_treatment": "Non pharmacological treatment"}]

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