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.

Based on the limited data currently available, the study suggests that circoviruses may have been infecting the ancestors of modern cetaceans early in their evolutionary history.

From Science Daily • Jan. 6, 2026

“Those individuals could have been infecting people before they ever felt bad. We didn’t know that until the last 24 hours.”

From Washington Post • Apr. 2, 2020

Many apes and monkeys carry their own strain of S.I.V, but it’s not clear how long the viruses have been infecting primates.

From New York Times • Jan. 12, 2010

Screwworms have been infecting cattle in all of Arizona, as well as in much of neighboring New Mexico, producing the most serious threat to ranchers there in five years.

From Time Magazine Archive

Mosquitoes have been infecting birds and following them on their seasonal migration paths to 40 states.

From Time Magazine Archive