If you have been around someone with the flu, it is understandable to wonder when you might start feeling sick. You may feel completely fine right now but still be watching closely for a fever, cough, body aches, or fatigue. Influenza A is one of the main types of influenza viruses responsible for seasonal flu. Like other influenza viruses, it had an incubation period, which is the time between being exposed to the virus and developing symptoms. So, how long does it take? Continue reading to learn more!
Need same-day influenza testing and treatment? Visit the walk-in clinic at AFC Urgent Care Denver Sloan's Lake. No appointment is required, just walk in when it's convenient for you. To plan your visit time in advance, simply book your time below.
How Long is the Incubation Period For Influenza A?
The incubation period for influenza A is typically about 1 to 4 days, with symptoms often appearing around 2 days after exposure. That means if you were exposed to someone with influenza A on Monday, you could potentially begin feeling sick anytime Tuesday through Friday. However, the exact timing can vary from person to person. Some people may also have a mild infection or experience symptoms that are easy to mistake for another respiratory illness. Common flu symptoms include:
- Fever or chills
- Cough
- Sore throat
- Runny or stuffy nose
- Headache
- Muscle or body aches
- Fatigue
- Feeling generally unwell
Not everyone with the flu develops every symptom, and some people may not have a fever.
When Are You Contagious With Influenza A?
One important thing to understand is that you may be able to spread influenza A before you realize you are sick. People with influenza can generally spread the virus beginning about a day before symptoms develop. They are often most contagious during the first few days of illness, although they can continue spreading the virus for several days afterward. This is one reason flu can spread through schools, households, workplaces, and other crowded settings so easily. Someone may feel healthy enough to go about their normal routine before realizing they're infected.
If you develop flu symptoms after a known exposure, staying home when you are sick and taking steps to reduce close contact with others can help limit the spread.
Can You Have Influenza A Without Symptoms?
Yes, not everyone infected with influenza develops obvious symptoms. Some people may have a mild infection, while others may have no noticeable symptoms at all. Even when symptoms are mild or absent, it's possible to spread the virus. This can make it difficult to determine exactly when someone became infected based solely on when they started feeling sick.
If you know you have been exposed to influenza A, pay attention to how you feel over the following several days. Symptoms that develop within the typical incubation period may be related to the exposure, but other respiratory viruses can cause very similar symptoms.
How Soon After Exposure Should You Get Tested For the Flu?
Whether you should get tested depends on your symptoms, exposure, risk factors, and the recommendations of your healthcare provider. Testing can be useful when flu is suspected, especially because influenza symptoms can overlap with other respiratory infections. A healthcare provider may also consider the timing of your symptoms and your medical history when deciding whether testing or treatment is appropriate. If you were exposed but have no symptoms, testing immediately may not tell you whether you will become sick later. A negative result does not mean you will not develop symptoms after a recent exposure.
When Should You Seek Care For Influenza Symptoms?
For many otherwise healthy people, the flu can be managed with rest, fluids, and symptom relief at home. However, some people have a higher risk of complications from influenza, including young children, older adults, pregnant people, and people with certain underlying health conditions. If you begin developing symptoms that are severe, worsening, or causing concern, it's a good idea to contact a healthcare provider for testing and treatment options.
An urgent care provider can evaluate flu-like symptoms, determine whether testing may be appropriate, and discuss treatment options when indicated. Antiviral medications may be recommended for some people, and they tend to be most effective when started early in the illness.
Get Same-Day Flu Testing & Symptom Relief at AFC Urgent Care Denver Sloan's Lake
The typical incubation period for influenza A is 1 to 4 days, with symptoms often developing around 2 days after exposure. Because people can spread influenza before they know they are sick, it is possible to become infected even when someone seems healthy at the time of contact. If you develop flu-like symptoms after a known exposure, pay attention to how your symptoms progress and consider getting evaluated if you're concerned. At AFC Urgent Care Denver Sloan's Lake, our providers can help determine whether influenza testing or treatment may be appropriate and provide guidance on getting back to feeling better. We provide prompt evaluation and treatment 7 days a week with no appointment required. If you have any additional questions about the services we provide, please contact us directly at (303) 480-1000.