Quarterly report pursuant to Section 13 or 15(d)

Cover Page

Cover Page - shares
6 Months Ended
Jun. 30, 2020
Aug. 06, 2020
Cover [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Entity Interactive Data Current Yes  
Document Period End Date Jun. 30, 2020  
Document Fiscal Year Focus 2020  
Document Fiscal Period Focus Q2  
Trading Symbol CFRX  
Entity Registrant Name CONTRAFECT Corp  
Entity Central Index Key 0001478069  
Current Fiscal Year End Date --12-31  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Current Reporting Status Yes  
Entity Emerging Growth Company false  
Title of 12(b) Security Common Stock  
Security Exchange Name NASDAQ  
Entity Shell Company false  
Entity Address, State or Province NY  
Entity Common Stock, Shares Outstanding   27,809,332