Sep 17, 2024 · People with flu are most contagious during the first three days of their illness. Some people, including young children and people with weakened immune systems may be contagious for …

1 day ago · For How Long Is the Flu Contagious? People with the flu are most contagious in the first three to four days of their infection, TODAY.com explained previously.

3 days ago · How long is flu contagious? What to know as influenza spreads ahead of holidays Experts have been warning for months of a mutated variant that could make for a particularly challenging flu …

Jun 5, 2024 · You can spread the flu before you feel ill, but you're typically most contagious during the first 3 days of your illness. People are usually contagious up to a week after they develop symptoms.

1 day ago · Understanding how long is the flu contagious is critical for preventing spread, protecting vulnerable populations, and making informed decisions about isolation, work, and school attendance. …

Sep 17, 2025 · The flu commonly spreads when someone with the virus coughs, sneezes, or talks. It is most contagious in the first three days after symptoms start.

Mar 12, 2025 · The flu is highly contagious, spreading rapidly in workplaces, schools, and households. Understanding when you are no longer contagious can help prevent further infections and ensure a …

Sep 10, 2025 · When it comes to the flu, timing is everything. You can be contagious before symptoms even appear and unknowingly spread the virus to others. Determining when you’re no longer …

Dec 19, 2025 · People with the flu can spread the virus to others 1 day before symptoms start and up to 5 to 7 days after becoming ill. The flu spreads mostly through tiny respiratory droplets in the air.

Sep 12, 2024 · You’ll be most contagious with the flu during the first three or four days after you feel ill. Germs may still be shared for a week after symptoms start, too.