The main claim of the passage is that frequent handwashing is crucial in staying well during the cold season. One example supporting this claim is that colds and flu are often transmitted through hands, and touching surfaces contaminated by others significantly increases the risk of germ exposure. Another example is the ability of the rhinovirus, the most common cold virus, to be picked up and spread through contact with contaminated surfaces. However, a sentence in the second paragraph containing an irrelevant detail is, "The most common cold virus is the rhinovirus."
shorten this pls