| Microorganism |  |  |  | 
  
    | Antimicrobial |  |  | Reference | 
            
			        
			            | Rhodococcus equi (macrolide-susceptible + 48h) | 0.12 | 0.25 | ≤0.06 - 0.5 | Clarithromycin (Biaxin)  | 1042 | 
                
			        
			            | Rhodococcus equi (macrolide-susceptible + 48h) | ≤0.5 | ≤0.5 | ≤0.5 - >8 | Rifampicin (Rifampin)  | 1042 | 
                
			        
			            | Rhodococcus equi (macrolide-susceptible + 48h) | 0.5 | 1 | ≤0.25 - 2 | Vancomycin (Vancocyn, Lyphocin)  | 1042 | 
                
			        
			            | Rhodococcus equi (macrolide-susceptible + 48h) | 1 | 1 | 0.5 - 1 | Erythromycin (E-mycin, Ery-tab, Benzamycin)  | 1042 | 
                
			        
			            | Rhodococcus equi (macrolide-susceptible + 48h) | 1 | 2 | ≤0.25 - 2 | Gentamicin (Gentamycin, Garamycin)  | 1042 | 
                
			        
			            | Rhodococcus equi (macrolide-susceptible + 48h) | 2 | 2 | 1 - 2 | Linezolid (PNU-100766, U-100766, Zyvox)  | 1042 | 
                
			        
			            | Rhodococcus equi (macrolide-susceptible + 48h) | 2 | 2 | 1 - >4 | Enrofloxacin  | 1042 | 
                
			        
			            | Rhodococcus equi (macrolide-susceptible + 48h) | 2 | 4 | 0.25 - >4 | Doxycycline (Doxycycline hyclate, Doxy, Vibra, Vibramycin)  | 1042 | 
                
			        
			            | Rhodococcus equi (macrolide-susceptible + 48h) | 2 | 4 | 1 - 4 | Azithromycin (Zithromax, Sumamed, Zitrocin)  | 1042 | 
                
			        
			            | Rhodococcus equi (macrolide-susceptible + 48h) | >8 | >8 | 0.5 - >8 | Ceftiofur  | 1042 | 
                
			        
			            | Rhodococcus equi (macrolide-susceptible + 48h) | >8 | >8 | 0.5 - >8 | Ceftiofur  | 1042 | 
                
			        
			            | Rhodococcus equi (macrolide-susceptible + 48h) | >16 | >16 | 4 - >16 | Penicillin (Benzylpenicillin, Penicillin G, Bicillin C-R/L-A, Pfizerpen, Wycellin)  | 1042 | 
                
			        
			            | Rhodococcus equi (macrolide-susceptible + 48h) | 16 | 32 | 8 - 64 | Chloramphenicol (Chloromycetin)  | 1042 | 
                
			        
			            | Rhodococcus equi (macrolide-susceptible + 48h) | >64 | >64 | ≤4 - >64 | Tilmicosin  | 1042 | 
                
			        
			            | Rhodococcus equi (macrolide-susceptible + 48h) | >64 | >64 | >64 - ? | Tulathromycin  | 1042 |