Ask a Doc: Your Questions About Cold, Flu and RSV Season Answered
October 7, 2026
Categories: Primary Care
Tags: Flu
As fall arrives in Michigan, so do cases of the common cold, flu, COVID-19 and RSV. Many people have questions about staying healthy, whether they really need a flu shot and when it's time to call their doctor.
We asked Jesse Schwartz, MD, a primary care physician with Trinity Health Medical Group, to answer some of the most common questions about cold and flu season.
Jesse Schwartz, MD
Primary Care
Trinity Health Medical Group, Primary Care - Norton Shores
Accepting new patients
View DetailsWhat’s Going Around Right Now and How Can People Tell the Difference Between a Cold, Flu, COVID-19 and RSV?
Jesse Schwartz, MD: Many respiratory illnesses share similar symptoms, including cough, congestion, sore throat, fever and fatigue. Because symptoms often overlap, it can be difficult to tell them apart based on symptoms alone. If you're concerned, especially if symptoms are severe or you're at higher risk for complications, testing and talking with your provider can help determine the best next steps.
I Hear People Say, “I Never Get the Flu Shot.” Do Healthy Adults Still Need One?
Jesse Schwartz, MD: Yes. Even healthy adults can become seriously ill from influenza and they can also spread the virus to family members, coworkers and others who may be more vulnerable. The flu shot remains one of the most effective ways to reduce the risk of severe illness and hospitalization during flu season.
Getting vaccinated isn't just about protecting yourself. It also helps protect your community, including older adults, young children and those with chronic health conditions.
Can Vitamin C, Zinc, Elderberry or Other Supplements Prevent Illness?
Jesse Schwartz, MD: Many supplements are marketed as immune boosters, but the evidence is mixed. Rather than relying on supplements alone, focus on habits that consistently support overall health and immune function.
These include:
- Eating a healthy, balanced diet
- Exercising regularly
- Staying up to date on preventative care
- Managing stress
- Getting enough quality sleep
These everyday habits can help your body function at its best throughout cold and flu season.
What’s the Most Overlooked Habit for Staying Healthy This Time of Year?
Jesse Schwartz, MD: Sleep. Most adults need seven to nine hours of sleep each night and poor sleep can make it harder for the immune system to function properly.
As schedules become busier in the fall with school, sports and holiday activities, sleep is often the first healthy habit people sacrifice. Prioritizing rest may be one of the simplest and most effective ways to support your health during respiratory virus season.
If I’ve Had the Flu or COVID-19 Before, Am I Still Protected?
Jesse Schwartz, MD: Some immunity may remain after a previous infection, but protection can decrease over time. Viruses also continue to change, which means past infection does not always provide strong protection against future illness. That's why it's important to discuss current vaccine recommendations and prevention strategies with your healthcare provider.
Besides Getting a Flu Shot, What Else Can People Do to Stay Healthy During Flu Season?
Jesse Schwartz, MD: Good everyday habits still matter. Washing your hands regularly, covering coughs and sneezes, cleaning frequently touched surfaces and staying home when you're sick can help reduce the spread of respiratory illnesses. Combined with vaccination, these simple practices can go a long way toward helping you and your family stay healthy throughout the season.
When Is It Time to Stop Treating Symptoms at Home and Call a Doctor?
Jesse Schwartz, MD: Contact your healthcare provider if symptoms are worsening, lasting longer than expected, causing breathing difficulties, leading to dehydration or preventing you from carrying out normal daily activities.
While many cold and flu symptoms can be managed at home with rest and fluids, it's important not to ignore symptoms that become severe or don't improve as expected. Early evaluation can help identify the cause and determine whether additional treatment is needed.
The Bottom Line
Respiratory virus season is here, but a few proactive steps can help reduce your risk of getting sick. Getting your annual flu shot, prioritizing sleep, practicing healthy habits and knowing when to seek medical care can help keep you and your family healthier throughout cold and flu season.
Stay Healthy This Cold and Flu Season
Whether you need a flu shot, preventive care or support for cold and flu symptoms, our primary care providers are here to help you stay well all season long. Select your region to schedule an appointment.