{"batchcode": "037S21A", "histograms": [{"histogram": {"Atrial fibrillation": 1, "Back pain": 1, "Blood test": 1, "Burning sensation": 1, "Chest pain": 1, "Deafness": 1, "Dyspnoea": 1, "Electrocardiogram": 1, "Oropharyngeal pain": 1, "Palpitations": 1, "Rash": 1, "Urticaria": 1, "Vaccination site erythema": 1, "Vaccination site pain": 1, "Vaccination site pruritus": 1, "Vaccination site swelling": 1}, "batchcodes": ["037S21A"]}]}