In summary, quality control specialists work in a wide variety of locations where they visually inspect or manually test products. Requirements vary from a high school diploma with on-the-job training to an advanced education, depending on the employer.
Most uncomplicated colds, which often lead to coughs, last between eight and nine days, but about 25 percent last two weeks, and 5-10 percent last three weeks. How quickly your cold is resolved has a lot to do with your general lifestyle habits and the state of your immune system.
Researchers at the University of Georgia analyzed the results of 19 studies on acute coughs (i.e. acute bronchitis or the common cold) and found quite a discrepancy between when you think symptoms fade (7 to 9 days), and when they actually fade: 17.8 days.