[{"arm_notes": "nan", "treatment_id": null, "treatment_name": "IIV4;mRNA COVID-19;Placebo (saline)", "treatment_type": "Biological;Biological;Other", "pharmacological_treatment": "Non pharmacological treatment"}, {"arm_notes": "nan", "treatment_id": null, "treatment_name": "IIV4;mRNA COVID-19;Placebo (saline)", "treatment_type": "Biological;Biological;Other", "pharmacological_treatment": "Non pharmacological treatment"}]

[{"arm_notes": "nan", "treatment_id": null, "treatment_name": "IIV4;mRNA COVID-19;Placebo", "treatment_type": "Biological;Biological;Other", "pharmacological_treatment": "Non pharmacological treatment"}, {"arm_notes": "nan", "treatment_id": null, "treatment_name": "IIV4;mRNA COVID-19;Placebo", "treatment_type": "Biological;Biological;Other", "pharmacological_treatment": "Non pharmacological treatment"}]

[{"arm_notes": "Simultaneous administration+/-third dose", "treatment_id": 1967, "treatment_name": "Covid-19 mrna vaccine (nucleoside-modified)+flu vaccine", "treatment_type": "Rna based vaccine+non covid vaccine", "pharmacological_treatment": "Vaccine+non covid vaccine"}, {"arm_notes": "Sequential vaccination+/-third dose", "treatment_id": 1967, "treatment_name": "Covid-19 mrna vaccine (nucleoside-modified)+flu vaccine", "treatment_type": "Rna based vaccine+non covid vaccine", "pharmacological_treatment": "Vaccine+non covid vaccine"}]

[{"arm_notes": "nan", "treatment_id": null, "treatment_name": "Simultaneous administration of mRNA COVID-19 and IIV4", "treatment_type": "Biological", "pharmacological_treatment": "Non pharmacological treatment"}, {"arm_notes": "nan", "treatment_id": 2188, "treatment_name": "Standard of care", "treatment_type": "Standard of care", "pharmacological_treatment": "Standard of care"}]