{"batchcode": "210638", "histograms": [{"histogram": {"COVID-19 immunisation": 2, "Chills": 2, "Pyrexia": 2, "Arthralgia": 1, "Diarrhoea": 1, "Fatigue": 1, "Headache": 1, "Limb discomfort": 1, "Myalgia": 1, "Nausea": 1}, "batchcodes": ["210638"]}]}