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.
Symptoms of whooping cough may include: 1  Coughing, violently and rapidly, until all the air has left the lungs and a person is forced to inhale, causing a whooping sound. 2  Sneezing. 3  Nasal discharge. 4  Fever. Sore, watery eyes.  Lips, tongue, and nailbeds may turn blue during coughing spells.