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Infectious Diseases Unit 2 Lesson 7 plan. B. A. I. J. C. L. H. K. D. G. E. F. Do now. If you go to the doctor with a bacterial infection, how will they know what you have? Why would you want to know which bacteria is causing the infection?. Activity: What’s in your nose!.
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Infectious Diseases • Unit 2 Lesson 7 plan B A I J C L H K D G E F
Do now • If you go to the doctor with a bacterial infection, how will they know what you have? • Why would you want to know which bacteria is causing the infection?
Antibiotic susceptibility • The empty areas surrounding the discs show where antibiotics diffused into the agar and killed the bacteria or ? Complete the worksheet in groups and prepare to share your data with the class.
Identifying antibiotic susceptibility of Staph Aureus Label the worksheet with the number of your MSA plate. Label each of the circles with the initials on the antibiotic disk. Draw a picture of the zone of inhibition (ZOI) around each circle Measure the diameter of the ZOI in millimeters and then record it on in the table. 1 6 2 5 3 4
Compare different MSA plates: Susceptible >17mm Unsusceptible <13mm
Wrap up • We used differential growth susceptibility to determine whether Staph Aureus grows in your nose. • Why might it be important to • know what is growing in your • nose? A B I C J K H D L G E F
Wrap up • If you can’t identify a bacterium how would you choose an antibiotic? A B I C J K H D L G E F
Wrap up • If you can’t identify a bacterium how would you choose an antibiotic? • All of them! (multi-drug therapy) A B I C J K H D L G E F
Homework Read about Staphylococcus Aureus Answer the question: Is Staphylococcus Aureus in the nasal cavity an infectious agent?