flu

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Related to FLUS: flux, influenza virus

flu:

see influenzainfluenza
or flu,
acute, highly contagious disease caused by a RNA virus (family Orthomyxoviridae); formerly known as the grippe. There are three types of the virus, designated A, B, and C, but only types A and B cause more serious contagious infections.
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flu

Informal
1. short for influenza
2. any of various viral infections, esp a respiratory or intestinal infection
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
References in periodicals archive ?
Around the world, between 20 and 40 million people were killed by the Spanish flu. An estimated 250,000 of the deaths were in Britain.
ASIAN FLU In 1957 a new flu travelled west from Asia.
It must be recalled that a never-before-seen strain of AH1N1 flu virus turned killer in Mexico and the United States, and caused some panic in other parts of the world.
The US Centers for Disease Control and Prevention (CDC) based in Atlanta, Georgia, has determined the AH1N1 flu virus is contagious and is spreading from human to human.