Health A-Z

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If your doctor suspects you might have plague, he or she will ask whether you:

  • Recently noticed a flea bite

  • Have been around wild rodents

  • Have recently traveled to an area of the world where plague is known to occur.

  • Have been in contact with a dead animal

  • Have been treating a pet that has been extremely ill.

To confirm the diagnosis, blood or other body fluids can be tested to look for evidence of Y. pestis bacteria infection.

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From Health A-Z, Harvard Health Publications. Copyright 2007 by the President and Fellows of Harvard College. All rights reserved. Written permission is required to reproduce, in any manner, in whole or in part, the material contained herein. To make a reprint request, contact Harvard Health Publications. Used with permission of StayWell.

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