_:vb50947965 "A pertussis that is a milder disease caused by the bacterium Bordetella parapertussis. The disease has_symptom coughing, has_symptom sneezing, or has_symptom runny nose ."^^ . _:vb50947965 . _:vb50947965 "url:http://en.wikipedia.org/wiki/Pertussis"^^ . _:vb50947965 . _:vb50947965 . _:vb50947965 . _:vb50947965 .