The common cold is a viral upper respiratory tract infection which mainly affects the nose. The most common pathogen are rhinoviruses.
Viral pathogens cause colds, flu, and chickenpox.
Colds
Colds, influenza and measles are all three caused by different kinds of viruses.
-What are the symptons? -What can you do to get rid of them?
Cold sores are common; 80% of us are infected with the virus.
rhinovirus and coronaviruses
Bacteria
arthritis
It's difficult to produce immunity to a common cold because the common cold is not one virus - it is over 700 viruses at last count. Rarely are more than 200 local to any particular area, but that is still, in effect, 200 different colds you can catch. Children tend to get the most colds, as all colds viruses are "new" to them. The amount of colds a person gets as they get older tends to decline, for that same reason - they've already had most of the indigenous colds viruses.
Strains of Rhinoviruses are the frequent causes of the common cold. Colds are usually caused by the rhinovirus (up to 40% of colds), or Coronaviruses (about 20%), but there are more than 200 viruses that can cause the common cold.
The most common name for harmful microbes is germs.
Bacteria do not cause the common cold. It is caused by a virus.