post·​in·​fec·​tious | \ ˌpōst-in-ˈfek-shəs How to pronounce postinfectious (audio) \

Definition of postinfectious

: occurring after and especially as a result of an infection postinfectious encephalitis a postinfectious cough

Examples of postinfectious in a Sentence

Recent Examples on the Web There are precedents for this kind of postinfectious, noncritical illness, such as posttreatment Lyme disease. Jennifer Couzin-frankel, Science | AAAS, 13 Apr. 2021 In other words, long Covid may simply be the latest example of a postinfectious phenomenon that has mystified physicians for more than a century. New York Times, 21 Jan. 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'postinfectious.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of postinfectious

1895, in the meaning defined above

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The first known use of postinfectious was in 1895

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Cite this Entry

“Postinfectious.” Dictionary, Merriam-Webster, Accessed 28 Sep. 2021.

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More Definitions for postinfectious


post·​in·​fec·​tious | \ -in-ˈfek-shəs How to pronounce postinfectious (audio) \
variants: or post-infectious

Medical Definition of postinfectious

: relating to or occurring in the period following infection : caused by a previous infection postinfectious syndromes Estimates of the annual incidence of idiopathic or postinfectious transverse myelitis range from 1.3 to 8 cases per million.— Elliot M. Frohman et al.


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