Both the flu and the common cold are caused by viruses and are contagious. However, the common cold can result from many viruses, including rhinoviruses and seasonal coronaviruses, while the flu ...

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 ...

The common cold is usually caused by a viral infection. Lots of viruses can take hold inside your nose, mouth, throat or lungs, and cause cold symptoms. Colds usually last 3 to 7 days in adults and 10 ...