Antibiotic Resistance: An Example of Rapid Microevolution Helicobacter pylori An

Question

Antibiotic Resistance: An Example of Rapid Microevolution Helicobacter pylori Antibiotic Resistance Over Time 100 90 80 70 60 # Ano icillin 40 1 10 20 10 Metroridarole Clanthrorvycin 5um 199039952000 2005 2010 Year The graph shows of the bacteria H pylori evolved a resistance to antibiotics over a period of 20 years. Resistance evolved most for the antibiotic if you are unable to view this graphic, please use a different browser not internet explorer) Metronidazole Amoxicillin Clarithromycin Tetracycline

Explanation / Answer

Metronidazole

From the given graph it is clear that H.pyroli has evolved more resistance to metronidazole. From 1990 to 1995 it shows a 100% increase in resistance. Overall for a period of 20 years i.e, 1990 to 2010, there in increase of 125% resistance to metronidazole.

Note: H.pyroli shows a constant resistance to amoxicillin (from 1995 to 2010),and tetracycline and clarithromycin (from 1990 to 2010).

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