{"batchcode": "EW2544", "histograms": [{"histogram": {"Arthralgia": 1, "Asthenia": 1, "Chest pain": 1, "Cough": 1, "Fatigue": 1, "Headache": 1, "Hypokinesia": 1, "Malaise": 1, "Myalgia": 1, "Odynophagia": 1, "Oropharyngeal pain": 1, "Productive cough": 1}, "batchcodes": ["EW2544"]}]}