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JAMA. 1937;108(1):49. doi:10.1001/jama.1937.02780010051015.
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The Brucella group of micro-organisms is commonly divided into Brucella melitensis (the goat strain), Brucella abortus (the bovine strain) and Brucella suis (the porcine strain), all of which may cause brucellosis in man. In a recent review of brucellosis in Iowa, Jordan and Borts1 point out that infected cows and hogs are the usual source of infection in human brucellosis in that state. With the exception of hogs, which are known to be infected only with the porcine strain, animals may be infected with any of the three closely related types of brucella germs. The symptoms of the disease are weakness, sweating, fever, chills, loss of weight and aching. While treatment at present consists largely in relieving the symptoms of discomfort and the use of medicinal preparations aimed at shortening the duration of illness, some cases have been treated successfully by subcutaneous injections of a Brucella vaccine. During nearly


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