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.
this means that you can be infected with the bacteria that cause whooping cough bordetella pertussis and not develop symptoms for several weeks an infected person is most contagious during the early stages of disease and after the onset of cough early symptoms of whooping cough may be mild and includelow grade fever mild dry cough runny nosen infected person is most contagious during the early stages of disease and after the onset of cough early symptoms of whooping cough may be mild and include low grade fever mild dry cough runny nose