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

Group	Antimicrobial	AMR-CoNS^b (n = 142)			MDR-CoNS^c (n = 73)
Group	Antimicrobial	Percent	95%	CI^a	Percent	95%	CI^a
Lincosamide	Clindamycin	11	7	17	19	12	30
Penicillins	Penicillin	63	55	70	88	78	93
	Ampicillin	63	55	71	85	75	91
	Cloxacillin	16	11	23	30	21	41
Tetracyclines	Oxytetracycline	11	7	17	21	13	31
Phenicols	Chloramphenicol	6	3	11	10	5	18
Flouroquinolone	Ciprofloxacin	8	4	13	12	7	22
Cephalosporin	Cefoxitin	9	5	15	18	11	28
Glycopeptide	Vancomycin	9	5	15	16	10	27
Aminoglycoside	Streptomycin	30	23	38	47	36	58
Macrolide	Erythromycin	49	41	58	64	53	74

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

ISSN: 1746-6148