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.
Charles Darwin-Father of Evolution. When Charles Darwin was born in 1809 science was still in its baby shoes. Chemists were talking about atoms, physicists about energy and electricity. Nobody really knew what it was. By the time he died in 1882 scientists were able to explain light and electromagnetic waves. And, thanks to Darwin, biologists were able to explain how life on Earth developed. Darwin was the best biologist of all times. He was an expert on plants, animals and insects. But he didn't want to be a biologist at first. At school and the university Darwin was just an average student.