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Causes of Diarrhea in Human Males

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Questions and Answers

What is the primary mode of transmission for Bordetella pertussis?

Airborne droplets from coughing or sneezing (correct)

Contaminated food or water

Percutaneous inoculation

Vector-borne transmission

Which of the following is the preferred specimen for diagnosis of Bordetella pertussis infection?

Sputum culture

Nasopharyngeal swab or saline wash (correct)

Blood culture

Urine sample

What is the primary mechanism of action of erythromycin in treating Bordetella pertussis infections?

Inhibition of bacterial cell wall synthesis

Inhibition of bacterial metabolic pathways

Interference with bacterial DNA replication

Disruption of bacterial protein synthesis (correct)

Which of the following is a characteristic of the colonies produced by Bordetella pertussis on selective media?

Pinpoint, non-hemolytic colonies Signup and view all the answers

What is the primary purpose of using a combination of Bordetella proteins and diphtheria and tetanus toxoids in the Bordetella pertussis vaccine?

To enhance the immune response against Bordetella pertussis Signup and view all the answers

What is the primary purpose of using trimethoprim-sulfamethoxazole as an alternative treatment for Bordetella pertussis infections?

To treat cases where erythromycin has failed Signup and view all the answers

Which of the following is a characteristic of Bordetella pertussis that contributes to its high contagiousness?

Its potential to cause cyanosis and vomiting Signup and view all the answers

Which of the following tests is the least sensitive for the diagnosis of Bordetella pertussis infection?

Cough plate culture Signup and view all the answers

What is the primary purpose of vaccinating pregnant women against Bordetella pertussis in the last trimester of pregnancy?

To provide passive immunity to the newborn infant Signup and view all the answers

Which of the following is a characteristic of the Bordetella pertussis vaccine that makes it effective in protecting infants?

Its administration starting at 2 months of age Signup and view all the answers