{
  "meta": {
    "disclaimer": "Do not rely on openFDA to make decisions regarding medical care. While we make every effort to ensure that data is accurate, you should assume all results are unvalidated. We may limit or otherwise restrict your access to the API in line with our Terms of Service.",
    "terms": "https://open.fda.gov/terms/",
    "license": "https://open.fda.gov/license/",
    "last_updated": "2026-04-28"
  },
  "results": [
    {
      "term": "FEBRILE NEUTROPENIA",
      "count": 186
    },
    {
      "term": "BACTERIAL INFECTION",
      "count": 158
    },
    {
      "term": "MYELOSUPPRESSION",
      "count": 151
    },
    {
      "term": "SECONDARY IMMUNODEFICIENCY",
      "count": 133
    },
    {
      "term": "PYREXIA",
      "count": 127
    },
    {
      "term": "CLOSTRIDIUM DIFFICILE COLITIS",
      "count": 112
    },
    {
      "term": "OFF LABEL USE",
      "count": 106
    },
    {
      "term": "PANCYTOPENIA",
      "count": 89
    },
    {
      "term": "VIRAL INFECTION",
      "count": 89
    },
    {
      "term": "FUNGAL INFECTION",
      "count": 82
    },
    {
      "term": "PNEUMONIA",
      "count": 81
    },
    {
      "term": "PRODUCT USE IN UNAPPROVED INDICATION",
      "count": 75
    },
    {
      "term": "BRONCHOPULMONARY ASPERGILLOSIS",
      "count": 70
    },
    {
      "term": "NEUTROPENIA",
      "count": 70
    },
    {
      "term": "SEPSIS",
      "count": 67
    },
    {
      "term": "CYTOMEGALOVIRUS VIRAEMIA",
      "count": 66
    },
    {
      "term": "THYMUS HYPOPLASIA",
      "count": 64
    },
    {
      "term": "BONE MARROW FAILURE",
      "count": 61
    },
    {
      "term": "LYMPHOID TISSUE HYPOPLASIA",
      "count": 61
    },
    {
      "term": "LYMPHOPENIA",
      "count": 61
    },
    {
      "term": "HUMAN HERPESVIRUS 6 INFECTION",
      "count": 60
    },
    {
      "term": "PSEUDOMONAL SEPSIS",
      "count": 59
    },
    {
      "term": "DEATH",
      "count": 58
    },
    {
      "term": "ACUTE MYELOID LEUKAEMIA RECURRENT",
      "count": 56
    },
    {
      "term": "CELLULITIS",
      "count": 54
    },
    {
      "term": "PLATELET COUNT DECREASED",
      "count": 54
    },
    {
      "term": "INFECTION",
      "count": 53
    },
    {
      "term": "MYCOBACTERIUM CHELONAE INFECTION",
      "count": 52
    },
    {
      "term": "THROMBOCYTOPENIA",
      "count": 52
    },
    {
      "term": "DRUG INTOLERANCE",
      "count": 49
    },
    {
      "term": "SEPTIC SHOCK",
      "count": 49
    },
    {
      "term": "LYMPHADENOPATHY",
      "count": 48
    },
    {
      "term": "WHITE BLOOD CELL COUNT DECREASED",
      "count": 48
    },
    {
      "term": "ENTERITIS",
      "count": 47
    },
    {
      "term": "PNEUMATOSIS INTESTINALIS",
      "count": 47
    },
    {
      "term": "DIARRHOEA",
      "count": 45
    },
    {
      "term": "HUMAN BOCAVIRUS INFECTION",
      "count": 45
    },
    {
      "term": "RHINOVIRUS INFECTION",
      "count": 45
    },
    {
      "term": "PARAINFLUENZAE VIRUS INFECTION",
      "count": 44
    },
    {
      "term": "ENTEROBACTER INFECTION",
      "count": 43
    },
    {
      "term": "SKIN TOXICITY",
      "count": 43
    },
    {
      "term": "HAEMOGLOBIN DECREASED",
      "count": 42
    },
    {
      "term": "HYPOTENSION",
      "count": 42
    },
    {
      "term": "NAUSEA",
      "count": 42
    },
    {
      "term": "ASPERGILLUS INFECTION",
      "count": 41
    },
    {
      "term": "DRUG INEFFECTIVE",
      "count": 41
    },
    {
      "term": "RESPIRATORY FAILURE",
      "count": 38
    },
    {
      "term": "ALANINE AMINOTRANSFERASE INCREASED",
      "count": 37
    },
    {
      "term": "DISSEMINATED ASPERGILLOSIS",
      "count": 37
    },
    {
      "term": "VENOUS THROMBOSIS",
      "count": 36
    },
    {
      "term": "ACUTE MYELOID LEUKAEMIA",
      "count": 32
    },
    {
      "term": "DECREASED APPETITE",
      "count": 32
    },
    {
      "term": "MUCOSAL INFLAMMATION",
      "count": 32
    },
    {
      "term": "GASTROENTERITIS NOROVIRUS",
      "count": 31
    },
    {
      "term": "NEUTROPHIL COUNT DECREASED",
      "count": 31
    },
    {
      "term": "VOMITING",
      "count": 30
    },
    {
      "term": "ANAEMIA",
      "count": 28
    },
    {
      "term": "COLITIS",
      "count": 28
    },
    {
      "term": "CYSTITIS BACTERIAL",
      "count": 27
    },
    {
      "term": "HERPES SIMPLEX",
      "count": 27
    },
    {
      "term": "CYSTITIS",
      "count": 26
    },
    {
      "term": "CYTOMEGALOVIRUS CHORIORETINITIS",
      "count": 26
    },
    {
      "term": "OESOPHAGEAL CANDIDIASIS",
      "count": 26
    },
    {
      "term": "ORAL HERPES",
      "count": 26
    },
    {
      "term": "PRODUCT USE ISSUE",
      "count": 26
    },
    {
      "term": "ASPARTATE AMINOTRANSFERASE INCREASED",
      "count": 25
    },
    {
      "term": "CONDITION AGGRAVATED",
      "count": 25
    },
    {
      "term": "MALIGNANT NEOPLASM PROGRESSION",
      "count": 25
    },
    {
      "term": "HYPERTENSION",
      "count": 24
    },
    {
      "term": "NEOPLASM PROGRESSION",
      "count": 24
    },
    {
      "term": "SECOND PRIMARY MALIGNANCY",
      "count": 24
    },
    {
      "term": "WHITE MATTER LESION",
      "count": 24
    },
    {
      "term": "BLOOD BILIRUBIN INCREASED",
      "count": 23
    },
    {
      "term": "ENCEPHALITIS",
      "count": 23
    },
    {
      "term": "HYPERBILIRUBINAEMIA",
      "count": 23
    },
    {
      "term": "LIVER DISORDER",
      "count": 23
    },
    {
      "term": "MULTIPLE ORGAN DYSFUNCTION SYNDROME",
      "count": 23
    },
    {
      "term": "PANCREATITIS",
      "count": 23
    },
    {
      "term": "STOMATITIS",
      "count": 23
    },
    {
      "term": "ACUTE KIDNEY INJURY",
      "count": 22
    },
    {
      "term": "EXPOSURE DURING PREGNANCY",
      "count": 22
    },
    {
      "term": "HEPATOTOXICITY",
      "count": 22
    },
    {
      "term": "HYPERTRIGLYCERIDAEMIA",
      "count": 22
    },
    {
      "term": "HYPOXIA",
      "count": 22
    },
    {
      "term": "NOROVIRUS TEST POSITIVE",
      "count": 22
    },
    {
      "term": "RENAL FAILURE",
      "count": 22
    },
    {
      "term": "VENOOCCLUSIVE LIVER DISEASE",
      "count": 22
    },
    {
      "term": "DISSEMINATED INTRAVASCULAR COAGULATION",
      "count": 21
    },
    {
      "term": "DRUG RESISTANCE",
      "count": 21
    },
    {
      "term": "GASTROINTESTINAL HAEMORRHAGE",
      "count": 21
    },
    {
      "term": "HEADACHE",
      "count": 21
    },
    {
      "term": "RASH",
      "count": 21
    },
    {
      "term": "ABDOMINAL PAIN",
      "count": 20
    },
    {
      "term": "BACTERAEMIA",
      "count": 20
    },
    {
      "term": "DEVICE RELATED INFECTION",
      "count": 20
    },
    {
      "term": "MYELODYSPLASTIC SYNDROME",
      "count": 20
    },
    {
      "term": "VIRAEMIA",
      "count": 20
    },
    {
      "term": "CARDIAC FAILURE",
      "count": 19
    },
    {
      "term": "DYSPNOEA",
      "count": 19
    },
    {
      "term": "GENERAL PHYSICAL HEALTH DETERIORATION",
      "count": 19
    }
  ]
}