non·​in·​fec·​tious | \ ˌnän-in-ˈfek-shəs How to pronounce noninfectious (audio) \

Definition of noninfectious

: not infectious or caused by infection noninfectious diseases a vaccine containing inactivated noninfectious viruses noninfectious allergic conjunctivitis

Examples of noninfectious in a Sentence

Recent Examples on the Web When volunteers are injected with these particles, their cells use the mRNA to reconstruct a noninfectious fragment of the virus, allowing their immune system to prepare antibodies that neutralize it. Ed Yong, The Atlantic, "How Science Beat the Virus," 17 Dec. 2020 The mRNA vaccines can leapfrog the hurdles of developing traditional vaccines such as producing noninfectious viruses, or producing viral proteins at medically demanding levels of purity. Sanjay Mishra, The Conversation, "How mRNA vaccines from Pfizer and Moderna work, why they’re a breakthrough and why they need to be kept so cold," 18 Nov. 2020 On whether Trump may still be infectious, Fauci cited information from the Centers for Disease Control and Prevention that states someone can typically be considered noninfectious after 10 days have passed following the onset of symptoms. Mica Soellner, Washington Examiner, "'He certainly looks good': Fauci says Trump appears healthy a week after COVID-19 diagnosis," 8 Oct. 2020 However, as the antigens in the vaccine are derived from weakened or noninfectious material from the virus, there is little risk of severe infection. Maitreyi Shivkumar, CNN, "A vaccine can provide better immunity than an actual infection. Here's why.," 2 Oct. 2020 This kind of behavior, alternating between being super infectious and fairly noninfectious, is exactly what k captures, and what focusing solely on R hides. Zeynep Tufekci, The Atlantic, "This Overlooked Variable Is the Key to the Pandemic," 30 Sep. 2020 By the mid-1960s, most sanatoriums were shut down as patients receiving new, effective drugs soon became noninfectious. Miriam Fauzia, USA TODAY, "Fact check: Tuberculosis is more dangerous than COVID-19 but context matters," 10 May 2019 The test kits in use in the U.S. described in the articles detect viral genetic material—RNA, in the case of coronaviruses—which can be infectious material or noninfectious fragments. WSJ, "Do Antibody Testing to Understand Covid-19," 16 Mar. 2020 Ileana Arias, the acting deputy director for noninfectious diseases at CDC, said. Claudia Harmata,, "17-Year-Old Texas Girl on Life Support, Family Says Illness Due to Vaping," 11 Sep. 2019

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

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First Known Use of noninfectious

1850, in the meaning defined at sense 1

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The first known use of noninfectious was in 1850

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Last Updated

10 Jan 2021

Cite this Entry

“Noninfectious.” Dictionary, Merriam-Webster, Accessed 25 Jan. 2021.

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More Definitions for noninfectious


non·​in·​fec·​tious | \ -in-ˈfek-shəs How to pronounce noninfectious (audio) \

Medical Definition of noninfectious

: not infectious noninfectious disease noninfectious endocarditis

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