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infectious disease
noun
: a disease (such as influenza, malaria, meningitis, rabies, or tetanus) caused by the entrance into the body of pathogenic agents or microorganisms (such as bacteria, viruses, protozoans, or fungi) which grow and multiply there compare communicable disease, contagious disease
Examples of infectious disease in a Sentence
Recent Examples on the Web
The bottom line: Elevating Kennedy to a position of power could ultimately lead to more vaccine hesitancy, more infectious disease, less trust in public health institutions and generalized distrust of the health care system.
—Caitlin Owens, Axios, 3 Nov. 2024
Whooping cough, also known as pertussis, is an infectious disease caused by the bacterium Bordetella pertussis, according to the CDC.
—Saleen Martin, USA TODAY, 14 Oct. 2024
But reassortment alone cannot create a virus capable of launching a human pandemic, says Richard Webby, an infectious disease researcher at St. Jude Children’s Research Hospital in Memphis, Tenn.
—Tanya Lewis, Scientific American, 31 Oct. 2024
Yet infectious disease researchers note that numbers remain too low for conclusions — especially given the virus’s grim history.
—Tribune News Service, The Mercury News, 29 Oct. 2024
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Word History
First Known Use
1600, in the meaning defined above
Time Traveler
The first known use of infectious disease was
in 1600
Dictionary Entries Near infectious disease
Cite this Entry
“Infectious disease.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/infectious%20disease. Accessed 22 Nov. 2024.
Kids Definition
infectious disease
noun
: a disease caused by the presence, growth, and increase in numbers of germs in the body
Medical Definition
infectious disease
noun
: a disease (as influenza, malaria, meningitis, rabies, or tetanus) caused by the entrance into the body of pathogenic agents or microorganisms (as bacteria, viruses, protozoans, or fungi) which grow and multiply there compare communicable disease, contagious disease
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