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viral infection

Cultural  
  1. An infection caused by a virus. At present, viral infections cannot be treated with antibiotics. (Compare bacterial infection.)


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Diseases caused by viral infections include herpes, chicken pox, hepatitis, influenza, and the common cold.

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.

Mpox, formerly known as monkeypox, is a viral infection characterized by a flu-like fever and rash that can last weeks.

From Barron's • Mar. 17, 2026

If you’ve had a recent viral infection, some evidence suggests the antiviral interferon response stays active, making it easier for your body to mount a quick defense against the next virus, Foxman said.

From The Wall Street Journal • Jan. 19, 2026

Based on this, the researchers hypothesize that genetic variation in ST6GAL1 could affect Paraprevotella levels and, in turn, susceptibility to viral infection.

From Science Daily • Dec. 23, 2025

Hepatitis B is a viral infection that attacks the liver and can lead to both acute and chronic illness.

From Salon • Dec. 12, 2025

“It’s a viral infection commonly known as the ‘kissing disease,’” he added.

From "Breaking Through" by Francisco Jiménez