A cold is caused by a virus that causes inflammation of the membranes lining the nose and throat.
The common cold is very contagious. It is usually transmitted by airborne droplets that are coughed or sneezed into the air by an infected person. These drops are then inhaled by another person. Evidence now suggests that most colds are caused by an interaction of exposure to the cold virus and: group of answer choices diet. lack of sleep. white blood count. stress.
The virus can be spread through exposure of droplets in the air when an infected person coughs, sneezes, or talks. Scientists confirm that it is the way our immune system reacts, and not the rhino virus itself, that causes cold symptoms Lack of sleep can also affect the immune system.
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