Annual Antibiotic Usage Percent Resistant Strains Year 1996 1997 1998 1999 2000

Question

Annual Antibiotic Usage Percent Resistant Strains Year 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 0.84 0.92 1.04 0.98 1.02 1.03 0.95 1.12 1.06 1.14 1.21 1.28 1.32 1.31 1.27 1.28 29 46 45 58 61 60 49 59 58 71 84 79 78 91 2011 Table 1. Data collected from 1996-2011 Question:s 1. Overall, what happened to the annual antibiotic usage in this community over the period of the study? 2. Overall, what happened to the percentage of bacterial strains resistant to the antibiotics over this time period? 3. From this data, do you think antibiotic usage and the percentage of antibiotic resistant strains are positively or negatively correlated? Explain your reasoning? 0 4. Do you think one of these variables was the cause of the other? If so, which one and explain your reasoning? 9

Explanation / Answer

1) annual use of antibiotic in this community over the period of study increased.

2) over the period of study as the use of antibiotics increased the % of resistant bacterial strains start increasing.

3) the use of antibiotics and % increase of resistant bacterial strains are positively correlated. the study suggested as the use of antibiotics increases over the time, the resistant of bacterial strain also increased.

4) yes, the excessive and misuse of antibiotics is causing the resistant of bacterial strains. bacterial strains got mutated in order to survive against these antibiotics.

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