[{"arm_notes": "nan", "treatment_id": null, "treatment_name": "COVID-19 vaccine;MenACWY vaccine", "treatment_type": "Biological;Biological", "pharmacological_treatment": "Non pharmacological treatment"}, {"arm_notes": "nan", "treatment_id": null, "treatment_name": "COVID-19 vaccine;MenACWY vaccine;Oral iron supplementation (pre-treatment)", "treatment_type": "Biological;Biological;Dietary Supplement", "pharmacological_treatment": "Non pharmacological treatment"}, {"arm_notes": "nan", "treatment_id": null, "treatment_name": "COVID-19 vaccine;MenACWY vaccine;Oral iron supplementation (simultaneous treatment)", "treatment_type": "Biological;Biological;Dietary Supplement", "pharmacological_treatment": "Non pharmacological treatment"}]

[{"arm_notes": "nan", "treatment_id": 2753, "treatment_name": "Ad26.cov2.s+menacwy vaccine", "treatment_type": "Non replicating viral vector+non covid vaccine", "pharmacological_treatment": "Vaccine+non covid vaccine"}, {"arm_notes": "Oral iron supplementation (pre-treatment) ", "treatment_id": 2752, "treatment_name": "Ad26.cov2.s+iron+menacwy vaccine", "treatment_type": "Non replicating viral vector+vitamins and dietary supplements+non covid vaccine", "pharmacological_treatment": "Vaccine+pharmacological treatment+non covid vaccine"}, {"arm_notes": "Oral iron supplementation (simultaneous treatment) ", "treatment_id": 2752, "treatment_name": "Ad26.cov2.s+iron+menacwy vaccine", "treatment_type": "Non replicating viral vector+vitamins and dietary supplements+non covid vaccine", "pharmacological_treatment": "Vaccine+pharmacological treatment+non covid vaccine"}]