Understanding the flu: A guide for seniors

The flu, or influenza, is a contagious respiratory infection caused by influenza viruses. It affects the nose, throat, and lungs, often leading to symptoms such as fever, runny nose, and sore throat. These symptoms usually appear 1 to 4 days after exposure and can last up to 8 days. Each year, influenza causes approximately 4 million severe cases worldwide and leads to over 300,000 deaths.

There are four types of influenza viruses—A, B, C, and D. Among them, influenza A is the main cause of seasonal flu epidemics. While birds are the primary source of influenza A viruses, they can also spread to mammals, including humans.

Although many people recover from the flu without medical treatment, certain groups are more vulnerable to complications. These include older adults, children under the age of 2, pregnant women, people with weakened immune systems, and those with chronic health conditions. In these individuals, the flu can lead to serious complications such as bronchitis, ear infections, and pneumonia.

The most effective way to protect yourself from the flu is through vaccination. The flu shot is recommended for nearly everyone aged 6 months and older. Vaccines work by introducing antigens—harmless components of the virus—that train your immune system to recognize and fight off the real virus without causing illness. Because influenza viruses constantly change, a new flu vaccine is developed each year to match the most current strains.

Getting vaccinated annually is especially important for seniors, as it helps reduce the risk of serious illness, hospitalization, and flu-related complications.

The Boom Health app provides trusted, vetted caregivers that can help meet your loved one’s specific needs. You can have peace of mind knowing that someone is always watching you or your loved one, offering support, and assisting with daily activities. If you are interested in booking care for you or your loved one, download the Boom Health app on the App Store or Google Play Store.

This article is not intended to be a substitute for professional medical advice or diagnosis. Always seek the advice of your physician or another qualified health provider with any questions you may have regarding a medical condition.