{"batchcode": "EW0167", "histograms": [{"histogram": {"Chest discomfort": 1, "Diarrhoea": 1, "Dyspnoea": 1, "Headache": 1, "Neck pain": 1, "Pain in extremity": 1, "Pharyngeal swelling": 1, "Throat tightness": 1, "Vomiting": 1}, "batchcodes": ["EW0167"]}]}