{"batchcode": "EF2589", "histograms": [{"batchcodes": ["EF2589", "EJ1686", "EL3249"], "histogram": {"COVID-19": 1, "SARS-CoV-2 test positive": 1}}, {"batchcodes": ["EF2589"], "histogram": {"Breast enlargement": 1, "Breast pain": 1, "Erythema": 1, "Extra dose administered": 1, "Headache": 1, "Interchange of vaccine products": 1, "Mammogram": 1, "No adverse event": 1, "Swelling face": 1, "Vaccine positive rechallenge": 1}}]}