The most severe illness associated with leptospirae, with symptoms of liver, kidney, and/or vascular dysfunction with lethal pulmonary hemorrhage and sometimes death, is called:
a. icteric leptospirosis.
b. anicteric leptospirosis.
c. Vincent's disease.
d. syphilis.
A
Pathogenic leptospirae rapidly invade the bloodstream after entry and spread throughout all sites in the body such as the central nervous system and kidneys. Virulent strains show chemotaxis toward hemoglobin, as well as the ability to migrate through host tissues. Weil's disease, or ic-teric leptospirosis, is generally the most severe illness, with symptoms of liver, kidney, and/or vascular dysfunction with lethal pulmonary hemorrhage; death can occur in up to 10% of pa-tients.
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According to the modern classification scheme, which animal would be a spider's closest relative?
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A.) 25% B.) 50% C.) 75% D.) 100%
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