{"batchcode": "O30A21A", "histograms": [{"batchcodes": ["O30A21A"], "histogram": {"COVID-19": 2, "Abdominal pain": 1, "Biopsy bone marrow": 1, "Chronic lymphocytic leukaemia": 1, "Cough": 1, "Drug ineffective": 1, "Dyspepsia": 1, "Dyspnoea": 1, "Full blood count abnormal": 1, "Haemoglobin decreased": 1, "Myalgia": 1, "Nausea": 1, "Pyrexia": 1, "Reticulocyte count decreased": 1, "SARS-CoV-2 test": 1, "SARS-CoV-2 test positive": 1}}]}