average amount of people with respiratory illness
An upper respiratory infection (URI), also known as the common cold, is one of the most common illnesses, leading to more health care provider visits and absences from school and work than any other illness every year.It is estimated that during a 1-year period, people in the U.S. will suffer 1 billion colds.n upper respiratory infection (URI), also known as the common cold, is one of the most common illnesses, leading to more health care provider visits and absences from school and work than any other illness every year.