| Microorganism |  |  |  | 
  
    | Antimicrobial |  |  | Reference | 
            
			        
			            | Streptococci (Viridans group + penicillin-susceptible) | 1 | 2 | 0.5 - 2 | Levofloxacin (Levaquin, Quixin)  | 117 | 
                
			        
			            | Streptococci (Viridans group + penicillin-susceptible) | 1 | 2 | 1 - 2 | Ciprofloxacin (Cipro, Ciproxin, Ciprobay)  | 374 | 
                
			        
			            | Streptococci (Viridans group + penicillin-susceptible) | 1 | 2 | ? - ? | Levofloxacin (Levaquin, Quixin)  | 39 | 
                
			        
			            | Streptococci (Viridans group + penicillin-susceptible) | 1 | 4 | 0.5 - 4 | Ciprofloxacin (Cipro, Ciproxin, Ciprobay)  | 117 | 
                
			        
			            | Streptococci (Viridans group + penicillin-susceptible) | 1 | 8 | ≤0.015 - 8 | Cefmetazole  | 1396 | 
                
			        
			            | Streptococci (Viridans group + penicillin-susceptible) | ≤2 | ≤2 | ? - ? | Amoxicillin-clavulanate  | 39 | 
                
			        
			            | Streptococci (Viridans group + penicillin-susceptible) | 2 | 4 | 1 - 4 | Ofloxacin (Floxin)  | 19 | 
                
			        
			            | Streptococci (Viridans group + penicillin-susceptible) | 2 | 4 | 1 - 4 | Ofloxacin (Floxin)  | 117 | 
                
			        
			            | Streptococci (Viridans group + penicillin-susceptible) | 2 | 8 | ≤0.015 - 64 | Levofloxacin (Levaquin, Quixin)  | 1396 | 
                
			        
			            | Streptococci (Viridans group + penicillin-susceptible) | 2 | 8 | 1 - 8 | Ciprofloxacin (Cipro, Ciproxin, Ciprobay)  | 19 | 
                
			        
			            | Streptococci (Viridans group + penicillin-susceptible) | >4 | >8 | ? - ? | Tetracycline (Sumycin, Achromycin V, Steclin)  | 39 | 
                
			        
			            | Streptococci (Viridans group + penicillin-susceptible) | >128 | >128 | 128 - >128 | D-ofloxacin  | 117 | 
                
			        
			            | Streptococci (Viridans group + penicillin-susceptible) | - | 0.03 | ≤0.002 - 0.06 | Dalbavancin  | 1112 | 
                
			        
			            | Streptococci (Viridans group + penicillin-susceptible) | - | 0.03 | ? - ? | Dalbavancin  | 1112 | 
                
			        
			            | Streptococci (Viridans group + penicillin-susceptible) | - | 0.06 | ? - ? | Teicoplanin (Targocid)  | 1112 | 
                
			        
			            | Streptococci (Viridans group + penicillin-susceptible) | - | 1 | ? - ? | Linezolid (PNU-100766, U-100766, Zyvox)  | 1112 | 
                
			        
			            | Streptococci (Viridans group + penicillin-susceptible) | - | 1 | ? - ? | Quinupristin/Dalfopristin (Synercid)  | 1112 | 
                
			        
			            | Streptococci (Viridans group + penicillin-susceptible) | - | 1 | ? - ? | Vancomycin (Vancocyn, Lyphocin)  | 1112 |