| Microorganism | MIC50 (μg/ml)
 | MIC90 (μg/ml)
 | Range (μg/ml)
 | Antimicrobial | Reference | 
            
			        
			            | Haemophilus influenzae | 0.5 | 2 | 0.25 - 2 | Azithromycin (Zithromax, Sumamed, Zitrocin) | 15 | 
                
			        
			            | Haemophilus influenzae | 1 | 2 | ≤0.06 - >16 | Azithromycin (Zithromax, Sumamed, Zitrocin) | 412 | 
                
			        
			            | Haemophilus influenzae | 1 | 2 | 0.25 - 32 | Azithromycin (Zithromax, Sumamed, Zitrocin) | 499 | 
                
			        
			            | Haemophilus influenzae | 1 | 4 | 0.5 - 8 | Azithromycin (Zithromax, Sumamed, Zitrocin) | 1113 | 
                
			        
			            | Haemophilus influenzae | 2 | 2 | 0.015 - >128 | Azithromycin (Zithromax, Sumamed, Zitrocin) | 1113 | 
                
			        
			            | Haemophilus influenzae | 2 | 2 | 0.12 - 4 | Azithromycin (Zithromax, Sumamed, Zitrocin) | 125 | 
                
			        
			            | Haemophilus influenzae | 2 | 2 | ≤0.12 - >16 | Azithromycin (Zithromax, Sumamed, Zitrocin) | 500 | 
                
			        
			            | Haemophilus influenzae | 2 | 2 | 1 - 4 | Azithromycin (Zithromax, Sumamed, Zitrocin) | 120 | 
                
			        
			            | Haemophilus influenzae | 2 | 4 | 0.001 - >=64 | Azithromycin (Zithromax, Sumamed, Zitrocin) | 950 | 
                
			        
			            | Haemophilus influenzae | 2 | 4 | <0.01 - 8 | Azithromycin (Zithromax, Sumamed, Zitrocin) | 948 | 
                
			        
			            | Haemophilus influenzae | - | 2 | ? - ? | Azithromycin (Zithromax, Sumamed, Zitrocin) | 602 | 
                
			        
			            | Haemophilus influenzae | - | 2 | ? - ? | Azithromycin (Zithromax, Sumamed, Zitrocin) | 1044 |