parapertussis

para·per·tus·sis -(.)pər-'təs-əs n a human respiratory disease closely resembling whooping cough but milder and less often fatal and caused by a different bacterium of the genus Bordetella (B. parapertussis)

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para·per·tus·sis (par″ə-pər-tusґis) [para- + pertussis] an acute respiratory disease clinically indistinguishable from mild or moderate pertussis, caused by Bordetella parapertussis. See also pertussis-like syndrome, under syndrome.