When cold season approaches, many people take precautions to avoid colds and flu. The flu shot is a first line of defense. Doctor's offices and pharmacies dispense shots. Many clinics, community groups, and public health departments offer free shots. Healthy eating, drinking plenty of fluids, and getting enough sleep are also important guards against winter illness. The most important step of all, in order to stay well during cold season, is washing your hands frequently. Colds and flu are transmitted through your hands. The most common cold virus is the rhinovirus. You pick up and pass on flu and cold viruses whenever you touch surfaces contaminated by other people. Doorknobs, handles, faucets, food-cart and basket handles, elevator buttons, public phones, tables, and trays, to name a few, can all carry viruses and bacteria. Touching your nose or rubbing your eyes after an outing are the quickest way to pick up germs on your hands. So, pay attention and keep washing!

In three to five sentences, identify the main claim of the passage and explain some examples of supports for that claim. Identify a sentence in the second paragraph that contains an irrelevant detail.

The main claim of the passage is that taking precautions, such as getting the flu shot, practicing good hygiene, and maintaining a healthy lifestyle, can help prevent colds and flu during cold season. Examples of supports for this claim include the mention of the flu shot as a first line of defense, the availability of free shots in clinics and community groups, and the importance of washing hands frequently to avoid picking up and transmitting viruses. An irrelevant detail in the second paragraph is the mention of various surfaces that can carry viruses and bacteria, as it does not directly support the main claim.