{"batchcode": "21C1601", "histograms": [{"histogram": {"COVID-19": 1, "Drug ineffective": 1, "Dyspnoea": 1, "Headache": 1, "Herpes zoster": 1, "Paraesthesia": 1, "Vaccination failure": 1, "Visual impairment": 1}, "batchcodes": ["21C1601"]}]}