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Definitions

infect

[in-fekt] / ɪnˈfɛkt /


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

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He goes on to emphasize that what Claude found — a previously uncharacterized enzyme system found in viruses that infect bacteria — isn’t necessarily going to be useful.

From Salon ● Sep. 30, 2026

“Their lifespan is determined by humidity, so if you have humidity, the infected mosquitoes will live longer and infect more people.”

From Los Angeles Times ● Sep. 22, 2026

What you may not underhand is how the same spirit of pseudo-news came to infect mainstream journalism.

From The Wall Street Journal ● Sep. 22, 2026

They excluded viruses that could infect complex organisms from the training database, performed the research on phage rather than viruses that infect people and it all took place in a secure laboratory.

From BBC ● Aug. 6, 2026

The insect pathogens are so specific that they infect only a small group of insects — sometimes a single species.

From "Silent Spring" by Rachel Carson

Rabies infects very few humans in the United States and California, according to the state public health department.

From Los Angeles Times ● Oct. 1, 2026

The virus that sparked a global pandemic still regularly infects, disables and kills hundreds of people per week.

From Salon ● Aug. 6, 2026

It uses a common cold virus that infects chimpanzees that has been genetically modified to make it safe.

From BBC ● Jul. 13, 2026

The species, named Taczanowskia waska, represents the first known example of a spider mimicking the appearance of a fungus that infects spiders.

From Science Daily ● Jun. 17, 2026

Engineered pollen blows just as easily as the original kind and infects all traditional plants in its path.

From "The Adoration of Jenna Fox" by Mary E. Pearson

Immune cells that usually defend the body by attacking infected or foreign cells appear in unusually high numbers in the brains of people with Alzheimer's disease and related conditions.

From Science Daily ● Sep. 28, 2026

Injecting antibodies can help provide temporary protection against a virus or, if already infected, help the immune system fight it off.

From The Wall Street Journal ● Sep. 28, 2026

Goodyear was infected with hepatitis and HIV while at the school.

From BBC ● Sep. 26, 2026

Because indeed, patient zero—which refers to the first person to be infected with an illness or disease in an outbreak—is a loaded term.

From Slate ● Sep. 23, 2026

“That’s normal. If it were infected, you’d have a fever and discoloration.”

From "Salt to the Sea" by Ruta Sepetys

A city-commissioned inspection report found that waste and high temperatures at the warehouse could speed up the breeding of flies capable of infecting wounds in both people and animals, a local NBC affiliate reported, external.

From BBC ● Aug. 9, 2026

When H5N1 bird flu began infecting U.S. dairy cattle in early 2024, veterinarians struggled to identify the cause.

From Science Daily ● Jun. 23, 2026

Many residents hide sick relatives from health workers, inadvertently infecting themselves through contact with the sweat and blood of the ill.

From The Wall Street Journal ● May 26, 2026

With hantavirus, the incubation period can take up to six weeks, so people must be isolated for a really long time to ensure they won’t get sick and start infecting others.

From Slate ● May 16, 2026

Currie agreed that there was a terrible fever infecting the city, but he simply did not think it was yellow fever.

From "An American Plague: The True and Terrifying Story of the Yellow Fever Epidemic of 1793" by Jim Murphy




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