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The common cold or the cold is a viral infectious disease of the upper respiratory tract that primarily affects the respiratory mucosa of the nose, throat, sinuses, and larynx. [6][8] Signs and symptoms may appear in as little as two days after exposure to the virus. [6]
The common cold is an illness affecting your nose and throat. Most often, it's harmless, but it might not feel that way. Germs called viruses cause a common cold. Often, adults may have two or three colds each year. Infants and young children may have colds more often.
Learn about the common cold, its causes and spread, signs and symptoms and ways to prevent it.
There are more than 200 viruses that can cause a common cold with 20-30% caused by "unknown" bugs. See a list of the most common virus types that cause colds.
The common cold is an infection of your nose, sinuses, throat and windpipe. Colds spread easily, especially within homes, classrooms and workplaces. More than 200 different viruses can cause colds. There’s no cure for a common cold, but it usually goes away within a week to 10 days.
Flu is caused by influenza viruses only, whereas the common cold can be caused by a number of different viruses, including rhinoviruses, parainfluenza, and seasonal coronaviruses. Seasonal coronaviruses should not be confused with SARS-CoV-2, the virus that causes COVID-19.
Colds are typically minor infections of the nose and throat (upper respiratory tract) caused by more than 200 different respiratory viruses. Rhinoviruses are the most common cause of colds in the U.S. Parainfluenza viruses, adenoviruses, enteroviruses, human metapneumovirus and common human coronaviruses also cause colds.