{"batchcode": "WS7229", "histograms": [{"histogram": {"COVID-19": 1, "Chills": 1, "Cough": 1, "Diarrhoea": 1, "Headache": 1, "Malaise": 1, "Oropharyngeal pain": 1, "Pyrexia": 1, "Swelling": 1}, "batchcodes": ["WS7229"]}]}