Yes, the common cold is caused by a virus. More specifically, it's caused by one of several viruses that inflame the membranes lining the nose and throat. Over 200 different viruses can cause a cold, with rhinoviruses being the most frequent culprit. [^1, ^2, ^3, ^4, ^5, ^6, ^7]
Understanding the Common Cold Virus
The common cold is a viral infection of the upper respiratory tract, often referred to as an upper respiratory infection (URI). ^6 While generally harmless, it can be quite uncomfortable. ^2 The viruses responsible easily spread from person to person. [^1, ^5] Symptoms typically appear within one to three days of infection. [^1]
Common Cold Viruses:
- Rhinoviruses: These are the most common cause of colds. [^1, ^2, ^4]
- Coronaviruses: These account for approximately 20% of colds. ^9
- Other Respiratory Viruses: Many other viruses can also cause colds. [^3, ^8]
Transmission:
The common cold is highly contagious. It spreads through close contact with an infected individual, primarily via respiratory droplets produced when coughing or sneezing. [^1, ^5, ^7]
Staying Healthy:
While there's no cure for the common cold, practicing good hygiene such as frequent handwashing can help limit the spread. [^7, ^8]
[^1]: A cold is caused by any one of several viruses that causes inflammation of the membranes that line the nose and throat. It can result from any one of more than 200 different viruses. But, the rhinoviruses causes most colds. The common cold is very easily spread to others.
