{"batchcode": "ENG6200", "histograms": [{"batchcodes": ["ENG6200", "ENG6206"], "histogram": {"Alopecia": 1, "Discomfort": 1, "Muscle discomfort": 1}}, {"batchcodes": ["ENG6200"], "histogram": {"Back pain": 1, "Chills": 1, "Dyspnoea": 1, "Headache": 1, "Interchange of vaccine products": 1, "Pain": 1, "Peripheral swelling": 1, "Pyrexia": 1}}]}