You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Which one of the following is not a feature of leptospirosis - and explain in detail?
The clinical expression of infection by Leptospira , which is related to diverse focal organ dysfunction, includes subclinical infection, an undifferentiated febrile illness, and Weil's disease--the most severe form. Classic Weil's disease is suggested by elevated levels of blood urea nitrogen and serum creatinine in conjunction with mixed conjugated and unconjugated hyperbilirubinemia with aminotransferase elevation to less than five times the upper limit of normal. In all forms of leptospirosis (not just Weil's disease), a variety of abnormalities can occur. Elevation of the noncardiac isoform of creatine kinase may indicate skeletal muscle damage. Hematologic abnormalities are variable but common: leukocytosis (typical in severe disease), leukopenia, hemolytic anemia, mild to moderate anemia, and thrombocytopenia . (Harrison's Principles of internal medicine, 20th edition, page 1395)