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About 24 to 48 hours
- “You can actually be contagious for up to a day or so prior to onset of your symptoms, and then usually you're most contagious for about 24 to 48 hours after onset of symptoms,” says Winslow.
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Is the Common Cold Contagious?
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Typically, you’re contagious from 1 day before you have any symptoms. You stay that way for 5 to 7 days after you start feeling sick. Kids and people with weak immune systems may shed...
Oct 24, 2023 · How Long Are You Contagious After Catching a Virus? Here’s how long you can keep spreading germs after you get a cold, the flu, RSV, or COVID-19. By. Becky Upham. Fact Checked. on...
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- When Are People with Flu Contagious?
People with flu can spread it to others. Most experts think that flu viruses spread mainly by droplets made when people with flu cough, sneeze, or talk. These droplets can land in the mouths or noses of people who are nearby (usually within about 6 feet away) or possibly be inhaled into the lungs. Less often, a person might get flu by touching a su...
Flu viruses can be detected in most infected persons beginning one day before symptoms develop and up to five to seven days after becoming sick. People with flu are most contagious in the first three to four days after their illness begins. However, infants and people with weakened immune systems who are infected with flu viruses may be contagious for longer than seven days.
Symptoms typically begin about two days (but can range from one to four days) after flu viruses infect a person’s respiratory tract. It is theoretically possible that before symptoms begin, an infected person can spread flu viruses to their close contacts. Some people can be infected with flu viruses and have no symptoms but may still be able to spread the virus to their close contacts.
Apr 12, 2023 · For the common cold, symptoms start to develop one to three days after exposure to the virus. Colds are most contagious one to four days after symptoms develop. Common cold symptoms include: Congestion. Coughing. Headache. Runny nose. Sore throat. Not everyone gets all these symptoms, and the severity can vary.
Jul 30, 2023 · Contagiousness After Flu Symptoms . Once flu symptoms start, adults can pass the virus to others for around seven days. According to the CDC, the virus is most contagious on the third or fourth day. After that, the contagiousness rapidly declines as the immune system gains control over the virus.
Aug 9, 2022 · You’ll be most contagious with the flu for the first three or four days after you actually feel sick. That’s why keeping your distance as much as possible for several days is important.”
6 days ago · Print. On This Page. What is Influenza (Flu)? Flu is a contagious respiratory illness caused by influenza viruses that infect the nose, throat, and sometimes the lungs. It can cause mild to severe illness, and at times can lead to death. The best way to prevent flu is by getting a flu vaccine each year. Flu Symptoms.