{"batchcode": "021-B21A", "histograms": [{"histogram": {"Headache": 1, "Injection site cellulitis": 1, "Myalgia": 1, "Nausea": 1, "Vaccination site erythema": 1, "Vaccination site mass": 1, "Vaccination site movement impairment": 1, "Vaccination site pain": 1}, "batchcodes": ["021-B21A"]}]}