flu

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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
References in periodicals archive ?
The Merck manual informs: 'Flu is caused by a different virus and produces symptoms that are more severe.
To deliver easy-to-understand information of flu epidemic to the public, the 'Flu Forecasting Station' shows the number of flu cases across the entire nation and the situation analysis of the influenza epidemic with a panel that displays visualized geographic data, Taiwan CDC said.
| The seasonal flu virus usually changes slightly each year so a new vaccine (the 'flu jab') is developed for each season.