Flu season doesn’t wait for a convenient time. In the United States, influenza activity typically begins climbing in the fall, peaks between December and February, and can linger into spring. A little preparation now can save you from missed work, cancelled plans, and a rough few weeks in bed.
At Advanced Internal Medicine, our clinical team helps patients across Sycamore, Elgin, and surrounding communities stay healthy through the colder months. This guide covers how to prevent the flu, how to recognize it, when to see a doctor, and what treatment options are available.
What Is the Flu?
Influenza is a contagious respiratory illness caused by influenza viruses that infect the nose, throat, and sometimes the lungs. It spreads mainly through droplets released when an infected person coughs, sneezes, or talks. You can also catch it by touching a contaminated surface and then touching your eyes, nose, or mouth.
For many healthy adults, the flu means a week of misery. For others, including older adults, young children, pregnant women, and people with chronic conditions, it can lead to serious complications such as pneumonia, hospitalization, or worsening of existing health problems.
Flu vs. Cold: How to Tell the Difference
The two are easy to confuse, but the flu usually hits harder and faster.
- Flu: sudden fever, chills, body aches, extreme fatigue, headache, dry cough, sore throat
- Common cold: gradual onset, runny or stuffy nose, sneezing, mild fatigue, and rarely a high fever
If you’re unsure, a quick visit or telemedicine appointment can help sort it out.
1. Get Your Annual Flu Vaccine
The flu vaccine remains the best way to reduce your risk of getting sick and of developing severe illness. Health authorities recommend yearly vaccination for nearly everyone six months and older, and it matters most for people at higher risk.
Vaccination protects more than you. When more people are immunized, the virus has fewer opportunities to spread to infants, seniors, and those with weakened immune systems who can’t be vaccinated or don’t respond as strongly.
Timing matters. Your body needs about two weeks after vaccination to build protection, so aim to get vaccinated in early fall, ideally by the end of October. If you’ve missed that window, getting vaccinated later is still worthwhile, since flu activity can continue for months. Flu strains change from year to year, which is why last year’s shot won’t cover you this season.
No vaccine is perfect, and you can still get sick after being vaccinated. But vaccinated people who do catch the flu tend to have milder illness and a lower chance of serious complications.
2. Wash Your Hands the Right Way
Hand hygiene protects you during the two-week window before the vaccine takes full effect, and it guards against other illnesses that have no vaccine, like the common cold.
Wash with soap and water for at least 20 seconds, especially:
- After using the restroom
- After coughing, sneezing, or blowing your nose
- Before eating or preparing food
- Before touching your face, contact lenses, or makeup
- After coming home from school, work, stores, or public transportation
When soap and water aren’t available, use an alcohol-based hand sanitizer with at least 60% alcohol.
3. Keep Your Distance From Sick People
Flu viruses travel through the air in respiratory droplets, so give people who are visibly coughing or sneezing some space when possible. Keep in mind that you can spread the flu a day before symptoms even begin, so someone who seems fine may still be contagious.
Avoid touching your eyes, nose, and mouth. These are the easiest entry points for the virus. In crowded indoor spaces during peak season, a well-fitting mask adds another layer of protection, particularly if you’re at higher risk.
4. Cover Your Coughs and Sneezes
Cough or sneeze into a tissue and throw it away immediately, or use the crook of your elbow. Sneezing into your hands transfers germs to every surface you touch afterward. Regularly cleaning frequently touched items, such as phones, doorknobs, keyboards, and countertops, also helps reduce spread at home and work.
5. Stay Home If You’re Sick
If you have the flu, resting at home is one of the kindest things you can do for your recovery and for everyone around you. As a general rule, stay home until you’ve been fever-free for at least 24 hours without fever-reducing medication. Rest helps your body fight the infection, and staying away from work, school, and social gatherings keeps the virus from spreading.
6. Build a Stronger Immune System Every Day
Daily habits won’t make you immune to the flu, but they support your body’s ability to handle infections.
- Sleep: Most adults need seven to nine hours a night. Poor sleep is linked to weaker immune responses.
- Nutrition: Aim for five or more servings of fruits and vegetables daily, along with lean proteins and whole grains.
- Hydration: Fluids keep your throat and nasal passages moist and help your body function well.
- Exercise: Regular moderate activity, such as brisk walking, supports overall immune health.
- Stress management: Chronic stress can take a toll on your body’s defenses, so make time to unwind.
Flu Symptoms to Watch For
Symptoms usually appear one to four days after exposure and can include:
- Fever or feeling feverish with chills
- Cough and sore throat
- Muscle or body aches
- Headache
- Fatigue and weakness
- Runny or stuffy nose
- Vomiting or diarrhea (more common in children)
Flu Treatment Options
Most people recover at home with rest, fluids, and over-the-counter medicines to ease fever and aches. Your provider can also prescribe antiviral medication, which can shorten the illness and reduce the risk of complications. Antivirals work best when started within the first 48 hours of symptoms, so don’t wait to call if you think you have the flu, especially if you’re at higher risk.
Our providers can evaluate your symptoms, recommend the right treatment, and monitor for complications. If you’re feeling too unwell to travel, ask about our telemedicine visits.
Who Is at Higher Risk?
Some people are more likely to develop serious flu complications:
- Adults 65 and older
- Children under 5, especially under 2
- Pregnant women
- People with diabetes, asthma, heart disease, or lung disease
- Those with weakened immune systems
If you manage a chronic condition, flu season is a good time to check in with your provider. Our teams offer care for diabetes management, heart disease and hypertension, and geriatric medicine to help keep long-term conditions stable.
When to Seek Emergency Care
Get medical help right away if you or a loved one experiences:
- Difficulty breathing or shortness of breath
- Persistent chest pain or pressure
- Sudden dizziness or confusion
- Severe or persistent vomiting
- Bluish lips or face
- Symptoms that improve and then return with a worse fever and cough
Protect Your Health This Flu Season
Fighting the flu comes down to a handful of smart habits: get vaccinated, wash your hands, avoid sick contacts, cover your coughs, stay home when ill, and take care of your body year-round. If you do get sick, early treatment can make a real difference.
Our team at Advanced Internal Medicine is here to help with flu vaccinations, sick visits, and preventive care. Learn more about our primary care and preventive care and wellness services, or book an appointment today.
Protect Yourself From the Flu
Schedule your flu shot or get evaluated early if symptoms start. Our team is here to help.
FAQs:
Q1. When is the best time to get a flu shot?
Ans: Early fall, ideally by the end of October, gives your body time to build protection before flu activity peaks. If you haven’t been vaccinated yet, it’s still worth getting the shot later in the season.
Q2. Can the flu shot give me the flu?
Ans: No. Flu shots contain inactivated virus or no live virus at all, so they cannot cause influenza. Some people experience mild side effects like a sore arm, low-grade fever, or tiredness for a day or two, which is a sign your immune system is responding.
Q3. How long is the flu contagious?
Ans: Most people can spread the flu from about one day before symptoms start to five to seven days after becoming sick. Children and people with weakened immune systems may be contagious longer.
Q4. How long does the flu last?
Ans: Most people feel better within a week, though cough and fatigue can linger for two weeks or more. See a provider if your symptoms worsen or don’t improve.
Q5. Do I need to see a doctor if I think I have the flu?
Ans: Not always, but it’s wise to call if you’re at higher risk, if symptoms are severe, or if you’d like to be considered for antiviral treatment within the first 48 hours.
Medically Reviewed By
At Advanced Internal Medicine of Northern Illinois, Dr. Ashima Salwan, MD, treats adult and geriatric patients, men and women alike, working through some of the most common and most connected health problems out there: obesity,...
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