Table 7.

Resistance rates(%) of Escherichia coli to antimicrobial agents

Antimicrobial agent	2003–2004 (n = 0)	2005–2006 (n = 4)	2007–2008 (n = 3)	2009–2010 (n = 7)	2011–2012 (n = 8)	2013–2014 (n = 9)
Amikacin	–	25.0	0	14.3	25.0	0
Gentamicin	–	50.0	100.0	57.1	50.0	22.2
Piperacillin	–	100.0	100.0	100.0	87.5	88.9
Cefazolin	–	50.0	100.0	100.0	75.0	88.9
Cefuroxime	–	75.0	100.0	100.0	75.0	100.0
cefotaxime	–	25.0	100.0	100.0	75.0	77.8
Ceftazidime	–	0	100.0	100.0	75.0	33.3
Cefepime	–	0	100.0	100.0	75.0	66.7
Ciprofloxacin	–	25.0	66.7	100.0	50.0	44.4