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Diphtheria

Diphtheria is an upper respiratory tract illness characterized by sore throat, low-grade fever, and an adherent membrane (a pseudomembrane) on the tonsil(s), pharynx, and/or nose.

Note:   The above text is excerpted from the Wikipedia article "Diphtheria", which has been released under the GNU Free Documentation License.
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Science News
July 6, 2015

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updated 12:56 pm ET