{"batchcode": "1534490", "histograms": [{"histogram": {"COVID-19 immunisation": 1, "Chills": 1, "Extensive swelling of vaccinated limb": 1, "Fatigue": 1, "Headache": 1, "Injection site reaction": 1, "Malaise": 1, "Myalgia": 1, "Nausea": 1, "Tremor": 1}, "batchcodes": ["1534490"]}]}