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To the Editor:
—Work recently done has proved that the spirochete of relapsing fever in Panama is transmitted by the human tick Ornithodoros talaje, and that this spirochete is of a distinct species, variety or strain from the commonly recognized relapsing fever spirochetes, S. obermeieri, S. novyi, S. kochi, S. duttoni and S. carteri. Thus far we have called the organism referred to above the spirochete of Panama, but now feel that the time has come to give it a specific name. S. novyi is generally recognized as the relapsing fever spirochete of North America. Agglutination and immunologic tests demonstrate that the spirochete found in Panama differs as markedly from S. novyi as S. novyi does from the Old World strains.The surface of the earth is divided by zoologists into six regions, namely, the Palearctic, the Oriental, the Australasian, the Ethiopian, the Nearctic and the Neotropical regions. The boundaries
Bates LB, St. John JH. SUGGESTION OF SPIROCHAETA NEOTROPICALIS AS NAME FOR SPIROCHETE OF RELAPSING FEVER FOUND IN PANAMA. JAMA. 1922;79(7):575–576. doi:10.1001/jama.1922.02640070063029
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