Is bronchitis contagious? "Bronchitis is almost always viral," explained Dr. Woods. "The one exception to that is people who have emphysema; sometimes theirs can be bacterial. But for most adults ...

Medically reviewed by Sanja Jelic, MD When you first start coughing, feel fatigued, and notice a low-grade fever, it can be hard to determine whether you have the common cold or bronchitis. A cold can ...

Influenza, commonly known as the flu, is a contagious respiratory illness caused by influenza viruses. It can range from mild ...

Learn more about norovirus, how to prevent contracting it, and why this year has seen such a surge in cases.

With winter illnesses sharing similar symptoms, it can be difficult to distinguish a common cold from bronchitis. Knowing the difference is vital, as bronchitis, an inflammation of the bronchial ...