Meaning of “spread like wildfire” in the English Dictionary

british dictionary

"spread like wildfire" in British English

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spread like wildfire

If disease or news spreads like wildfire, it quickly affects or becomes known by more and more people:

Once one child in the school has the infection, it spreads like wildfire.

(Definition of “spread like wildfire” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)