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Table 2 Minimum inhibitory concentration (mg/L) of 19 Staphylococcus spp. isolates from 13 Ugandan pig herds. Values in bold are above the epidemiological cut-off value (ECOFF)

From: The presence of antibiotic-resistant Staphylococcus spp. and Escherichia coli in smallholder pig farms in Uganda

  PENa OXAa CEFb FOXb ENR FA ERY CLI GEN NIT TET SXT1
Concentrations in the wells (mg/L) 0.03–1 0.25–1 1–4 0.25–8 0.25–1 0.5–2 0.5–2 0.5–2 1–4 16–64 0.25–4 0.25–4
S. aureus
 ECOFF2 0.125 2 1 4 nd 0.5 1 0.25 2 32 1 0.25
S. aureus§ 1 < 0.25 < 1 4 < 0.25 < 0.5 < 0.5 < 0.5 < 1 < 16 < 0.25 0.25
S. aureus > 1 < 0.25 < 1 4 < 0.25 < 0.5 < 0.5 < 0.5 < 1 < 16 < 0.25 0.5
S. aureus > 1 0.5 < 1 4 < 0.25 < 0.5 > 2 < 0.5 < 1 < 16 < 0.25 0.5
 MRSA > 1 > 1 2 > 8 < 0.25 < 0.5 > 2 < 0.5 < 1 < 16 < 0.25 0.5
Other Staphylococcus spp.
 ECOFF3 0.1252 1 12 42 nd 0.5 1 0.25 0.5 322 1 0.252
S. simulans < 0.03 < 0.25 < 1 2 < 0.25 1 < 0.5 < 0.5 < 1 < 16 > 4 < 0.25
S. simulans# < 0.03 < 0.25 < 1 2 < 0.25 0.5 0.5 0.5 < 1 < 16 0.5 < 0.25
S. simulans < 0.03 < 0.25 < 1 2 < 0.25 < 0.5 < 0.5 < 0.5 < 1 < 16 > 4 < 0.25
S. simulans < 0.03 < 0.25 < 1 4 < 0.25 1 < 0.5 < 0.5 < 1 < 16 < 0.25 < 0.25
S. simulans < 0.03 < 0.25 < 1 2 < 0.25 1 < 0.5 1 < 1 < 16 0.5 0.5
S. chromogenes§ > 1 < 0.25 < 1 1 < 0.25 < 0.5 1 < 0.5 < 1 < 16 0.5 > 4
S. chromogenes < 0.03 < 0.25 < 1 0.5 < 0.25 < 0.5 2 < 0.5 2 < 16 0.5 < 0.25
S. cohnii§ 0.5 1 < 1 > 8 0.5 > 2 > 2 1 < 1 < 16 > 4 < 0.25
S. cohnii§ 0.25 0.5 < 1 8 < 0.25 > 2 > 2 < 0.5 < 1 < 16 > 4 < 0.25
S. sciurii# 0.06 1 < 1 2 0.5 > 2 < 0.5 1 < 1 < 16 > 4 < 0.25
S. sciurii 0.06 1 < 1 2 < 0.25 2 < 0.5 < 0.5 < 1 < 16 < 0.25 < 0.25
S. lentus¤ 0.25 1 < 1 2 0.5 2 < 0.5 1 < 1 < 16 0.5 < 0.25
S. petrasii > 1 < 0.25 < 1 2 < 0.25 < 0.5 < 0.5 < 0.5 < 1 < 16 0.5 < 0.25
S. epidermidis < 0.03 < 0.25 < 1 2 < 0.25 < 0.5 < 0.5 < 0.5 < 1 < 16 > 4 < 0.25
S. hyicus > 1 < 0.25 < 1 0.5 < 0.25 < 0.5 < 0.5 < 0.5 < 1 < 16 > 4 1
  1. Penicillin (PEN), oxacillin + 2% NaCl (OXA), cephalothin (CEF), cefoxitin (FOX), enrofloxacin (ENR), fusidic acid (FA), erythromycin (ERY), clindamycin (CLI), gentamicin (GEN), nitrofurantoin (NIT), tetracycline (TET) and trimethoprim-sulfamethoxazole (SXT)
  2. nd = not defined
  3. MRSA= Methicillin-resistant S. aureus
  4. Strains with the same symbol (§, # or ¤) originated from the same herd
  5. aDefined as one antibiotic class (penicillins) in the determination of multidrug resistance
  6. b Defined as one antibiotic class (cephalosporins) in the determination of multidrug resistance
  7. 1 ECOFF for sulfamethoxazole, combined with trimethoprim at a ratio of 1:19
  8. 2 ECOFF for S. aureus is given according to EUCAST [31]
  9. 3 ECOFF for coagulase-negative staphylococci is given according to EUCAST [31]. If an ECOFF for these were not available, the value has been extrapolated from the ECOFF of S. aureus