Isolation and Identification of Staphylococcus aureus from Milk and Milk Products, Associated Factors for Contamination, and Their Antibiogram in Holeta, Central Ethiopia

Table 8

Patterns of drug resistance of S. aureus isolated from milk and milk products.

Frequencies	Antimicrobial’s resistance pattern	No of resistant isolates	Percent
Three	AMX, AMP, GEN	3	7.5
	AMX, AMP, TET	2	5
Total		5	12.5
Four	AMX, AMP, OXA, AZM	1	2.5
	AMX, AMP, OXA, CXT	7	17.5
	AMX, AMP, OXA, TET	2	5
Total		10	25
Five	AMX, AMP, OXA, AZM, CXT	1	2.5
	AMX, AMP, OXA, NAL, CXT	6	15
	AMX, AMP, OXA, TET, CXT	3	7.5
	AMX, AMP, OXA, GEN, CXT	2	5
	AMX, AMP, OXA, VAN, CXT	2	5
	TET, NAL, AMO, NIT, OXA	1	2.5
Total		15	37.5
Six	AMX, AMP, OXA, NIT, CXT, CHL	4	10
	AMX, AMP, OXA, NAL, CXT, NOR AMX, AMP, OXA, NAL, CXT, CHL
	AMX, AMP, OXA, NAL, CXT, GEN
Total		4	10
Seven	AMX, AMP, OXA, NAL, CXT, GEN, TET	3	7.5
	AMX, AMP, OXA, NAL, CXT, CHL, TET
	AMX, AMP, OXA, NAL, CXT, NOR, TET
Total		3	7.5
Eight	AMX, AMP, OXA, NAL, AZM, GEN, TET, VAN	1	2.5
Total		1	2.5

AMP—ampicillin, AMX—amoxycillin, AZM—azithromycin, CTX—cefotaxime, CHL—chloramphenicol, GEN—gentamicin, NAL—nalidixic acid, NIT—nitrofurantoin, NOR—norfloxacin, OXA—oxacillin, TET—tetracycline, and VAN—vancomycin.