BA A 15 year old boy goes to the physician after stepping on…

BA A 15 year old boy goes to the physician after stepping on a rusty nail. The physician is concerned that he may develop a tetanus infection and in addition to giving the boy antiserum, he gives him an injection of tetanus toxoid (inactivated tetanus toxin). Which of the following is accurate in terms of describing mechanism of action for this toxin?

SP A 2-month- old child is rushed to the hospital with diffi…

SP A 2-month- old child is rushed to the hospital with difficulty breathing and seeming “floppy.” It is thought that she contracted the etiologic agent by exposure to raw honey used to encourage her to take a formula bottle. Which of the following bacteria is most associated with this presentation?

The Performance Improvement (PI) team was meeting to discuss…

The Performance Improvement (PI) team was meeting to discuss the post-operative infection rate issues. Bob was assigned by the PI team leader to monitor the meeting agenda and watch the clock for adherence to the schedule.  In what capacity was Bob serving during this meeting for the PI team?  

BA A 27 year old man who has AIDS comes to the infectious di…

BA A 27 year old man who has AIDS comes to the infectious disease clinic for the evaluation of skin lesions. Skin examination reveals multiple red to red/purple nodules and papules on several parts of his body. A CT scan of the abdomen reveals multiple nodular lesions within the spleen and liver. Histopathology of the skin lesions shows proliferation of the vascular endothelial cells, evidence of angiogenesis, and specialized staining shows clumps of bacilli present in the lesion. The lesions slowly resolves over a period of 6 to 8 weeks with an extended course of azithromycin antibiotic. Which one of the following is most likely the cause of this patient’s disease?