Escherichia coli Strains Isolated from the Uteri Horn, Mouth, and Rectum of Bitches Suffering from Pyometra: Virulence Factors, Antimicrobial Susceptibilities, and Clonal Relationships among Strains

Table 6

Antimicrobial resistance (percentage) and distribution of number of resistant phenotypes among the E. coli commensal isolates from feces of bitches with pyometra and healthy bitches.

Antimicrobial drugs	Feces
	Bitches with Pyometra (𝑛=19)	Healthy bitches (𝑛=43)
Ampicillin	47.3%	41.1%
Cephalothin	68.4%	35.2%
Ceftriaxone	36.8%	0.0%
Tetracycline	63.1%	41.1%
Gentamycin	26.3%	11.7%
Amikacin	57.8%	17.6%
Nalidixic acid	42.1%	17.6%
Ciprofloxacin	10.5%	0.0%
Number of resistant phenotypes	Number of E. coli isolates
0	2	19
1	3	8
2	4	8
3	2	3
4	1	3
5	4	2
6	2	0
7	1	0