[{"arm_notes": "nan", "treatment_id": 2187, "treatment_name": "Placebo", "treatment_type": "Placebo", "pharmacological_treatment": "Placebo"}, {"arm_notes": "nan", "treatment_id": null, "treatment_name": "Recombinant COVID-19 vaccine (adenovirus type 5 vector) for Inhalation (Ad5-nCoV-IH)", "treatment_type": "Biological", "pharmacological_treatment": "Non pharmacological treatment"}]

[{"arm_notes": "1, day 0, Inhalation, have been vaccinated with intramuscular Ad5-nCoV > 56 days prior to enrollment", "treatment_id": 2066, "treatment_name": "Ad5-ncov-ih", "treatment_type": "Non replicating viral vector", "pharmacological_treatment": "Vaccine"}, {"arm_notes": "", "treatment_id": 2187, "treatment_name": "Placebo", "treatment_type": "Placebo", "pharmacological_treatment": "Placebo"}]