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Case 4 Answer

After determining the cause of Gina's sore throat you give her a 10 day perscription for penicillin. She fills the perscription and takes the medication as directed for two days. She starts feeling better and decides to stop taking the medication and saves the remaining pills. What does taking the medication prevent in this patient?

  1. glomerulonephritis and the suppurative complications of this bacterial infection- treatment prevents the suppurative complications but NOT glomerulonephritis
  2. glomerulonephritis and acute rheumatic fever- treatment prevents acute rheumatic fever but NOT glomerulonephritis
  3. acute rhematic fever, glomerulonephritis and the suppurative complications of this bacterial infection- treatment prevents acute rheumatic fever and the suppurative complications but NOT glomerulonephritis
  4. acute rhematic fever and the suppurative complications of this bacterial infection- Correct*
  5. future Streptococcus pyogenes infections- treatment does NOT prevent future infections. Without treatment this infection will go away on its own as the person makes antibodies to the M protein. Their risk of suppurative complications (e.g., peritonsilar abscess) goes up as does their risk of developing acute rheumatic fever. Streptococcus pyogenes can produce over 100 antigenically unique M proteins. People usually get strep throat when their throat is colonized with a S. pyogenes strain that makes an M protein the person has not been infected with before.

 

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Site Last Revised 11/12/13
Neal Chamberlain, PhD. A. T. Still University of Health Sciences/Kirksville College of Osteopathic Medicine.

Take Care and Think Microbiologically!