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.
We now know that the inheritance of acquired characteristics is not an actual mechanism of evolution. Darwin saw that Lamarck had some very good ideas that could lead to evolution. Many of Lamarckâs ideas can be seen in Darwinâs Origin of Species. Lamarck was a believer in immutability. Darwin used this idea to further his research on how species were indeed mutable. Darwin also used Lamarckâs inheritance of acquired characteristics as support for his natural selection idea.