MS-DOS resulted from a request in 1981 by IBM for an operating system to use in its IBM PC range of personal computers. Microsoft quickly bought the rights to 86-DOS from Seattle Computer Products, and began work on modifying it to meet IBM's specification.
Complications from whooping cough can include weight loss, loss of bladder control, fainting, rib fractures from severe coughing, and pneumonia. A small percentage of adolescents and adults with whooping cough need to be hospitalized for their illness. In one study, 61% of adults with whooping cough missed work.
According to the Centers of Disease Control and Prevention, there are three stages of whooping cough symptoms: 1  Catarrhal â After the incubation period of 5 to 10 days, on average, whooping cough symptoms begin to develop. Catarrhal symptoms include inflammation of the mucous membranes in one of the airways.