{"batchcode": "EW-0172", "histograms": [{"batchcodes": ["EW-0172", "WE0150"], "histogram": {"Chest discomfort": 1, "Chest pain": 1, "Muscle strain": 1}}, {"batchcodes": ["EW-0172"], "histogram": {"Anxiety": 1, "Blister": 1, "Burning sensation": 1, "Fear of injection": 1, "Presyncope": 1, "Rash": 1, "Rash pruritic": 1, "Skin weeping": 1, "Vaccine positive rechallenge": 1}}]}