66.  A patient presents with a bacterial infection on the skin and soft tissues of the leg. The vernacular name of the etiological agent  of this infection is “flesh eating bacteria”.  What is the scientific name of this infection? (2pts) What is the name of the etiological agent (genus and species) (2pts).

37.   A 6-week old infant is brought to the emergency room with a 10-day history of             coughing and choking spells.  The baby gasps for air in between coughs,             experiencing paroxysms of coughing.  The culture grows gram – obligate             aerobic rods.  Which of the following microorganisms is likely to cause these             symptoms?           

   51.      Clostridium difficille-associated diarrhea (CDAD) is usually preceded by:                 

38.    Which of the following organisms is a normal microbiota of the lower             Respiratory tract?            

17.       The drawback (side effect) in the use of Isotretinoin (Accutane) in the treatment of             Acne is that the drug is:           

  55.  A patient presents with symptoms consistent with gummas on many organs, skin                    bone, neurosyphylis and cardiovascular aortic aneurism.  These symptoms and                    signs are consistent with:                  

11.      Which is wrongly matched?            

5.       The following results were obtained from a broth dilution test for microbial susceptibility test.  The organisms were grown and then sub-cultured. KEY: + = growth; – = no growth.   Antimicrobial conc.     Visible growth          Growth in sub-culture   A. 160ug                               –                                       – B. 80ug                                 –                                       – C. 40ug                                 –                                       – D. 20ug                                 –                                      + E. 10ug                                 –                                       + F. 5ug                                   +                                      +  G. 2.5ug                                +                                      +   a) What is the minimal inhibitory concentration (MIC)? (1pt) —————————   What is the minimal bactericidal concentration (MBC)? (1pt).- ———————-

32,  An 8-year old boy in rural N. Carolina is hospitalized with fever, severe head ache and Macular rash on her palm and sole of the feet.  A tick was removed from his hair line one week earlier.  An ELISA test is positive for anti Rickettsial antibody.  This boy has:    

3.    Which of these statements is FALSE?