Antimicrobial resistance patterns and biofilm formation of coagulase-negative Staphylococcus species isolated from subclinical mastitis cow milk samples submitted to the Onderstepoort Milk Laboratory

Table 3 Antimicrobial resistance patterns of biofilm positive coagulase-negative Staphylococcus species isolated from cow milk samples at the Onderstepoort milk laboratory, 2017

Group	Antimicrobial	AMR-CoNS^b biofilm positive (n = 24)			MDR-CoNS^c biofilm positive (n = 11)
Group	Antimicrobial	Percent	95%	CI^a	Percent	95%	CI^a
Lincosamide	Clindamycin	21	9	41	36	15	65
Penicillins	Penicillin	54	35	72	82	52	95
	Ampicillin	42	25	61	64	35	85
	Cloxacillin	4	1	20	9	2	38
Tetracyclines	Oxytetracycline	8	2	26	18	5	48
Phenicols	Chloramphenicol	8	2	26	18	5	48
Flouroquinolone	Ciprofloxacin	13	4	31	18	5	48
Cephalosporin	Cefoxitin	8	2	26	18	5	48
Glycopeptide	Vancomycin	8	2	26	9	2	38
Aminoglycoside	Streptomycin	46	28	65	55	28	79
Macrolide	Erythromycin	58	39	76	73	43	90

^a95% CI = 95% confidence interval
^bAMR-CoNS = Antimicrobial resistance of coagulase negative Staphylococcus species resistant to at least one antimicrobial
^cMDR-CoNS = Multidrug resistance of coagulase negative Staphylococcus species

ISSN: 1746-6148