Exam 35: Bordetella Pertussis and Bordetella Parapertussis

A nasopharyngeal aspirate is cultured on Bordet-Gengou agar,and growth is observed.The colonies are also subjected to a direct fluorescent antibody (DFA)stain,which is also positive.On the basis of these findings,the antimicrobial therapy that should be administered to the patient is:

Which of the following toxins contributes to the virulence of B.pertussis and works by hemolyzing red cells and activating cyclic adenosine monophosphate,which inactivates several types of host immune cells?

If real-time polymerase chain reaction (PCR)is performed on a Bordetella isolate,then it must be noted that this type of swab is unacceptable for collection because of the presence of which of the following inhibitory factors?

During the paroxysmal stage of pertussis,symptoms are:

The mode of transmission of B.pertussis can best be described as:

During the catarrhal stage of pertussis,symptoms are:

Because of its longer shelf life,the medium of choice to cultivate Bordetella spp.is:

Acceptable specimens for the detection of B.pertussis are:

Pertussis (whooping cough)is an epidemic disease that is a highly contagious,acute infection of the upper respiratory tract caused by the:

B.pertussis colonies growing on Regan-Lowe medium yields which of the following colonial morphologic appearances?