flu
B1Pronunciation
UK
- /flˈuː/
US
- /ˈflu/
Description
- influenza infection
- contagious respiratory illness
- fever, cough, body aches
The "flu," short for influenza, isn't just a bad cold. It's a contagious respiratory illness caused by viruses that infect your nose, throat, and lungs. Imagine feeling like you were hit by a truck: achy all over, exhausted, and likely dealing with a fever and cough. That's often what it feels like. It spreads easily from person to person through tiny droplets in the air when an infected person coughs or sneezes.
While many use "the flu" casually for any illness with similar symptoms, true influenza is usually more severe. Luckily, there's a vaccine that can help protect you and lessen the virus's impact. Remember, washing your hands often and staying home if you feel sick are the best ways to avoid spreading the flu!
The "flu," or influenza, is an infectious disease caused by influenza viruses that affect the respiratory system: your nose, throat, and lungs. It's more than just a common cold. While both share some symptoms like cough and congestion, the flu typically comes on suddenly and with much greater intensity. Think high fever, body aches, fatigue, headache, and sometimes even vomiting or diarrhea.
The term "flu" is often used casually to describe any illness causing similar discomfort, but true influenza is a specific viral infection with potentially serious complications like pneumonia, bronchitis, and sinus or ear infections. In people, the main types are influenza A and B, which change over time. That's a big reason why a new flu vaccine is recommended every year.
The virus spreads through airborne droplets produced when infected people cough, sneeze, or talk. It can also be contracted by touching surfaces contaminated with the virus and then touching your own mouth, nose, or eyes.
Public health officials strongly recommend annual vaccination as the best way to prevent the flu and reduce its spread. Beyond that, practicing good hygiene—such as frequent handwashing, covering coughs, and staying home when sick—is a crucial step in protecting yourself and others from this widespread illness. So next time you're feeling under the weather, remember it might be more than just a cold; it could be the flu!
Examples
- 1
Sick at home
She's home with the flu today.
- 2
Workplace
Several people in the office caught the flu last week.
- 3
School outbreak
The flu is going around at school.
Phrase
going around
spreading from person to person
- 4
Cold vs flu
I thought it was just a cold, but it turned out to be the flu.
- 5
Prevention
My doctor recommended a flu shot before winter.
Phrase
flu shot
an injection to help prevent the flu
- 6
Older adults
Older adults can get very sick from the flu.
Forms and spellings
1 form open this card.
Main spelling
- flunoun