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Segment Reporting
12 Months Ended
Dec. 31, 2020
Segment Reporting [Abstract]  
Segment Reporting Segment Reporting
.Operating segments are defined as components of a business for which separate discrete financial information is available for evaluation by the chief operating decision maker in deciding how to allocate resources and assess performance. The Company and its chief operating decision maker, the Company’s Chief Executive Officer, view the Company’s operations and manages its business as a single operating segment, which is the discovery, development and commercialization of novel antibiotics for serious infectious diseases.

The Company operates in 2 geographic regions: the United Kingdom and the United States. Substantially all of the Company's long-lived assets are held in the United Kingdom.

For details of revenue from external customers by geography refer to Note 6.