Introduction to the Activity:
Streptococcus pneumoniae, or pneumococcus, is a leading cause of respiratory illness (namely pneumonia) in children and the elderly. Intense antibiotic therapy for pneumococcal infections over the last few decades has resulted in the emergence of multi-drug resistant strains. For example, the graph below illustrates changes in resistance to penicillin by pneumococcus bacteria in Icelandic children. The use of penicillin was strongly discouraged starting in the early 1990’s with the results illustrated. (Data from Kristinsson, K. G. 1995. Epidemiology of penicillin resistant pneumococci in Iceland. Microbial Drug Resistance 1(2):121-125).
M7D2: Host-Pathogen Dynamics Discussion
Question:
Briefly describe the rationale underlying the general hypothesis that the use of antibiotics selects for resistance in bacteria. According to your understanding of coevolution in pathogens and hosts, is the trend toward decreased resistance following reduced use of antibiotics likely to continue? Explain why or why not. Lastly, how would you judge if host-pathogen dynamics such as this one arose due to coevolution?
Chrome FilFile Edit View History BookmarksPeople Window HelD &1) 99% ExMon Dec 17 2:07:14 PM Aviva Smadia QFAX ED PROIBIDODIOCESE FOLDIDLELEXICODIDB +C Dhttps : / / excelsior instructure . com / couses / 7550 / assignments / 216278/ submissions / 17081O TOPausedApps M GMAIL G GOOGLE G AGENDAwww . kevinrandoPlease Sign InGraded Exam # 1MID 2 : Host – Pathogen Dynamics DiscussionAnnual estimates of resistance1988 1989 1990991 1992 19931994995 1996
PLACE THIS ORDER OR A SIMILAR ORDER WITH COLLEGE NURSING PAPERS AND GET AN AMAZING DISCOUNT!
