C. difficile diarrhea is largely a nosocomial disease and is the most frequent cause of diarrhea in hospitalized patients. Its occurrence in the outpatient setting, other than in patients confined to nursing homes, is much less common.
Darwin had arrived at a complete theory of evolution by 1839, but it was to be another 20 years before he published his ideas of evolution through natural selection in his epochal book On the Origin of Species by Means of Natural Selection.
Cuvier did not live long enough to learn about Charles Darwin's proof of evolution, but Lyell did. He came to accept this proof in the early 1860's along with most leading scientists of that time.Lyell also became a friend of Charles Darwin.rasmus Darwin 1731-1802. Another late 18th century closet-evolutionist was Erasmus Darwin, the grandfather of the well known 19th century naturalist, Charles Darwin. Erasmus was an English country physician, poet, and amateur scientist.