LOW HUMIDITY INCREASES COLD RISK
During winter, use a humidifier or vaporizer to raise the humidify inside your home. Low humidity dries out the mucosa lining nasal passages and increases risk of catching a cold or other upper respiratory tract infection. Being in an air conditioned room in summer also exposes one to low humidity with a similar effect on the nasal membranes.
Steeping with the mouth open also permits membrane linings to dry out and become more susceptible to viral invasion. Persons with a clogged Eustachian tube, or with sinus problems, are also more susceptible.
A person with the flu should stay home from work. If possible, that person should be restricted to one bathroom and should use only his or her own towel and washcloth. As far as possible, a cold or flu sufferer should be isolated in his or her own room and other family members should stay out. Only disposable tissues should be used.
It’s safest to avoid contact with anyone who has had a cold or flu for a week after the symptoms first appeared. However, a cold becomes contagious approximately twenty-four hours before symptoms appear.
Especially if you live in a small town or community, travel exposes you to new virus strains which can increase your risk of a cold or flu. If you live in a large city, where travelers are frequently importing new virus strains, risk of exposure to a new virus strain through travel is diminished.
Be careful about flying if you have a cold and are susceptible to ear infections. If you have a cold and fly, the plane’s descent may aggravate ear pressure. A sharp pain, or a discharge from the ear on landing, may indicate a middle ear infection or even a perforated eardrum. In either case, medical treatment is required.
Otherwise, ear infections can usually be prevented by blowing the nose gently and steadily. Sniffling is another common cause of ear infection, especially in children.
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