Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
caught the flu
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase 'caught the flu' is correct and usable in written English.
You can use it to describe someone's illness in the past tense. For example: "She caught the flu last week and had to stay home from work."
✓ Grammatically correct
News & Media
Wiki
Academia
Alternative expressions(5)
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
28 human-written examples
Then, all set to go, he reportedly caught the flu.
News & Media
Both she and her sister caught the flu.
News & Media
Only 1percentt of them caught the flu.
News & Media
Groucho Marx caught the flu in New York and Mahatma Gandhi in Ahmedabad.
News & Media
I must have caught the flu, but I had to go to the factory, where a stack of cut pieces was waiting to be ironed.
News & Media
At the end of 2011 the band apparently spent three months in the studio, halting only when Bono caught the flu.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
32 human-written examples
But Botvinnik was the better psychologist, had a shrewd knowledge of chess politics and made wily use of rules where 12-12 kept his title in 1954 and his 1957 defeat gave him a return series where he caught the flu-stricken Smyslov at the start.
News & Media
You can't catch the flu from the flu vaccine.
Academia
Myth: I'll catch the flu from the influenza vaccine.
Academia
Boys were more likely to catch the flu from other boys, and girls from other girls.
Academia
"If people are coughing and sneezing, you can easily catch the flu.
News & Media
Expert writing Tips
Best practice
When writing about health, it is acceptable to use the common phrase "caught the flu". However, consider your audience. In formal contexts, using "contracted influenza" might be more appropriate.
Common error
Don't assume that every cold is "the flu". Flu symptoms are generally more severe and sudden in onset than those of a common cold. Confirming the diagnosis can influence treatment decisions.
Source & Trust
83%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "caught the flu" functions as a verb phrase indicating that someone has contracted the influenza virus. As Ludwig AI confirms, this is a grammatically sound way to express having become ill with the flu.
Frequent in
News & Media
48%
Wiki
17%
Academia
13%
Less common in
Science
8%
Formal & Business
7%
Reference
0%
Ludwig's WRAP-UP
The phrase "caught the flu" is a common and grammatically correct way to describe contracting the influenza virus. As Ludwig AI indicates, it is widely used in various contexts, including news, general conversation, and even academic writing. While alternatives like "contracted influenza" may be more appropriate for formal settings, "caught the flu" is a reliable and easily understood phrase. It's important to remember, though, that not every cold is the flu, and accurate diagnosis is key for proper treatment.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
got the flu
Simplifies the phrase by using "got" instead of "caught", making it more colloquial.
contracted influenza
Replaces "caught" with "contracted" and "flu" with "influenza", offering a more formal tone.
came down with the flu
Uses the idiom "came down with" instead of "caught", indicating the onset of illness.
picked up the flu
Uses "picked up" as a more casual way of saying "caught", implying transmission.
developed the flu
Substitutes "caught" with "developed", emphasizing the gradual appearance of the illness.
took ill with the flu
Replaces "caught" with "took ill", a slightly more formal way to describe getting sick.
was infected with the flu
Emphasizes the infectious nature of the flu.
became sick with the flu
Uses a more general term "became sick" instead of the specific verb "caught".
succumbed to the flu
Suggests a yielding to the illness, often implying a more severe case.
was stricken with the flu
Uses "stricken" to emphasize the sudden and often debilitating impact of the flu.
FAQs
How can I use "caught the flu" in a sentence?
You can use "caught the flu" to describe someone who became ill with the flu, such as "She "caught the flu" and had to stay home from work" or "Many students "caught the flu" during the winter months".
What are some synonyms for "caught the flu"?
Alternatives include "contracted influenza", "came down with the flu", or "developed the flu", depending on the context and desired level of formality.
Is it correct to say "catch the flu" or "get the flu"?
Both phrases are acceptable, but "catch the flu" and "get the flu" refer to the present or future. To talk about a past illness, "caught the flu" or "got the flu" is more appropriate.
What's the difference between saying "caught the flu" and "had the flu"?
"Caught the flu" implies the moment of contracting the illness, whereas "had the flu" refers to the period of time during which someone was ill with the flu.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
83%
Authority and reliability
4.5/5
Expert rating
Real-world application tested