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.
exists and is an alternate of . Charles Darwin was best known for his theory of evolution. He wrote the book The Origin of Species. He is known for his journey on the Beagle, and for developing the theory of adaptation and natural selection. Animal species evolved into their current state--humans probably developed from primates to neanderthals to Homo sapiens. Charles Darwin was best known for his theory of evolution. He wrote the book <i>The Origin of Species</i>. He is known for his journey on the <i>Beagle</i>, and for developing the theory of adaptation and natural selection. Animal species evolved into their current state--humans probably developed from primates to neanderthals to <i>Homo sapiens</i>.