The flu season is currently in full swing across the U.S., with many states experiencing varying levels of flu-like illnesses, the CDC reports. One of the most common viruses this season is influenza A (H3N2), also known as subclade K. Health experts are stressing the importance of getting the latest flu vaccination, staying home when feeling unwell, and washing hands often to help prevent the spread of the virus.
If you’re concerned about catching or spreading the flu, here’s what you need to know about how long the virus can be contagious.
According to Dr. Samantha Picking, a senior director at Walgreens in Massachusetts, flu patients are generally contagious for five to seven days after they start showing symptoms. However, some individuals, such as young children or those with weakened immune systems, might spread the virus for even longer, sometimes up to two weeks.
Dr. Picking also notes a common misconception: many believe that people can’t pass on the flu until they show symptoms. “Actually, you can start spreading the virus a day before you feel ill and remain contagious for up to a week,” she explains. The incubation period, which is the time from exposure to symptom onset, typically lasts about two days but can vary from one to four days.
If you start feeling unwell or have been in contact with someone who has the flu, it’s wise to limit your interaction with others. “To minimize the risk of spreading the virus, it’s best to stay home until at least 24 hours after your fever has gone down without medication,” Dr. Picking advises. For healthy adults, this usually means staying home for five to seven days after symptoms begin.
Additionally, wearing a mask for a few days upon returning to daily activities could help protect those around you. Dr. Picking also mentions that while a lingering cough may persist even after other symptoms have improved, it doesn’t necessarily mean you’re still contagious. It’s courteous to wear a mask and practice good cough hygiene around others.
Some antiviral medications can help shorten the time someone is contagious if taken soon after symptoms appear. “These medications work best if started within two days of noticing symptoms,” Dr. Picking adds. It’s recommended to consult a healthcare provider if you’re considering antiviral treatment.
Flu symptoms typically include fever, chills, headaches, fatigue, cough, sore throat, and a runny nose. The rising number of cases linked to the subclade K variant demonstrates its intensity and increased spreadability. Experts are observing a particularly challenging flu season this year.
In summary, staying informed, vaccinated, and mindful of spreading the flu is key to navigating this challenging time. If you’re uncertain about your health or when to leave home, don’t hesitate to seek advice from a healthcare professional.
