JAMA. 1925;84(9):687-688. doi:10.1001/jama.1925.02660350051023.
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Tuberculosis and Rainfall: The Effect of Humidity  Interesting support for the theory of Dr. William Gordon of Exeter that the prevalence of tuberculosis is related to the degree of humidity in the air was afforded in a lecture by Sir Leonard Rogers at the Royal Society of Medicine. He has been struck by the points of resemblance between the bacillus of leprosy and that of tuberculosis, and also by their relation to climatology. Figures that he has prepared show that when a population has been infected with a quiescent form of tuberculosis it does not seem to suffer from leprosy, which indicates that tuberculization gives some immunity to leprosy. He said there was no proof that leprosy was hereditary, and equally it was now in doubt whether tuberculosis was hereditary. Actually, the danger of infection from tuberculosis was infinitely greater than was that from leprosy, and until the public could


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