{"batchcode": "EF6789", "histograms": [{"batchcodes": ["EF6789"], "histogram": {"Deep vein thrombosis": 1, "Headache": 1, "Herpes zoster": 1, "Lymphatic disorder": 1, "Menometrorrhagia": 1, "Pyrexia": 1, "Ultrasound scan": 1, "Vaccination site pain": 1}}]}