noun
- a contagious viral infection that causes fever, body aches, and respiratory symptoms
Usage: informal
Examples
- She caught the flu and had to stay home from work for a week.
- The flu vaccine helps protect against common strains of the virus.
- Many people get the flu during winter months.
- His symptoms suggested he had the flu rather than a cold.
- The flu outbreak closed several schools in the district.
- After recovering from the flu, she felt weak for several days.