{"batchcode": "EWD196", "histograms": [{"histogram": {"Headache": 2, "Chest discomfort": 1, "Chest pain": 1, "Herpes zoster": 1, "Immunisation": 1, "Malaise": 1, "Pain in extremity": 1, "Rash": 1, "Sleep disorder": 1}, "batchcodes": ["EWD196"]}]}