{"batchcode": "EN2318", "histograms": [{"batchcodes": ["EN2318", "EN6201"], "histogram": {"COVID-19": 1, "SARS-CoV-2 test positive": 1}}, {"batchcodes": ["EN2318"], "histogram": {"COVID-19": 1, "SARS-CoV-2 test positive": 1}}]}