Mites as Possible Vectors or Reservoirs of Equine Encephalomyelitis in Texas

S. Edward Sulkin Department of Microbiology, The University of Texas, Southwestern Medical School, Dallas, Texas

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Charles L. Wisseman Jr. Department of Microbiology, The University of Texas, Southwestern Medical School, Dallas, Texas

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Ernest M. Izumi Department of Microbiology, The University of Texas, Southwestern Medical School, Dallas, Texas

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Christine Zarafonetis Department of Microbiology, The University of Texas, Southwestern Medical School, Dallas, Texas

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Summary

The present report summarizes the results of field and laboratory studies designed to determine the role of mites as possible vectors or reservoirs of Western equine encephalomyelitis. It is concluded from these studies that although occasionally chicken mites or wild bird mites are found to be naturally infected with this virus they play no essential role in the epidemiology of the disease. The demonstration of the Western equine virus in chicken mites or in wild bird mites may be significant only as an indication that they have recently fed on infected chickens or wild birds.

Author Notes

Present address: University of Maryland, School of Medicine, Baltimore, Maryland.

Present address: Yale University School of Medicine, New Haven, Connecticut.

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