Anything contagious, such as the flu, is always automatically infectious: if you can catch it from someone, it's being passed to you via an infectious agent, which is the thing that gets you …

Aug 18, 2025 · You may be contagious. For the next 5 days: take added precaution, such as taking additional steps for cleaner air, hygiene, masks, physical distancing, and/or testing when you will be …

Nov 6, 2025 · How long is the flu contagious? Here, doctors explain what flu symptoms to watch out for and how long you should stay home when sick with the flu.

CONTAGIOUS definition: capable of being transmitted by bodily contact with an infected person or object. See examples of contagious used in a sentence.

A contagious disease can be caught by touching someone who has the disease or by touching an infected object, or by an infected person coughing, sneezing, etc. near you:

A feeling or attitude that is contagious spreads quickly among a group of people. Laughing is contagious. Antonio has a contagious enthusiasm for the beautiful aspect of food.

You should probably postpone dinner if your date's cold is contagious — that means it's easily spread and likely to get you sick. Contagious actually evolved from contagio, the Latin phrase for “contact."

Definition of contagious adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Contagious refers to a disease or condition that can be easily spread from one person to another through direct or indirect contact. It can also refer to a behavior, emotion, or situation that is likely to …

Tested positive for COVID-19? Learn how long you may be contagious and what precautions to take to help stop the spread.