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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

For safety, they only trained the models on DNA from viruses that can’t infect humans.

From The Wall Street Journal ● Aug. 7, 2026

The resulting 16 novel viruses were created to infect bacteria and pose no threat to people.

From BBC ● Aug. 6, 2026

“It’s the lie I’m thinking of. It might infect everything. If they ever found out you’d lied to them about this, the true things would suffer. They wouldn’t believe anything then.”

From "East of Eden" by John Steinbeck

The other forms of plague are bubonic, which infects the lymph nodes, and septicemic, which is transmitted in the bloodstream and is also very deadly.

From The Wall Street Journal ● Oct. 6, 2026

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 normally infects animals, typically fruit bats, but outbreaks among humans can sometimes start when people handle infected animals.

From BBC ● Jul. 2, 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

The Ebola virus spreads through contact with infected bodily fluids such as blood or vomit.

From BBC ● Oct. 7, 2026

But the disease can spread quickly because the incubation period is very short—symptoms can appear within a day and up to a week later—and an infected person’s cough can be teeming with bacteria.

From The Wall Street Journal ● Oct. 6, 2026

A Contra Costa resident who became infected with rabies died in 2012.

From Los Angeles Times ● Oct. 6, 2026

Person-to-person spread of pneumonic plague hasn’t been documented in the U.S. since 1924, according to the CDC, but there have been rare cases among people exposed to cats that were sickened by eating infected rodents.

From The Wall Street Journal ● Oct. 6, 2026

Chess dashed for the door as well, because Emma had infected him with a sudden fear: What if the door closed and he got stuck in the secret room all by himself?

From "The Strangers" by Margaret Peterson Haddix

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

The good news is the virus has shown no signs of mutating to make it better at infecting people.

From The Wall Street Journal ● May 16, 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

Clearly, the mysterious killing force was still in Philadelphia, still working its way into households despite every precaution, still infecting at an alarming rate.

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




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