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Grant Revenue (Tables) | 12 Months Ended
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Dec. 31, 2020
Revenue from Contract with Customer [Abstract] |
Disaggregation of Revenue | The following tables summarize grant revenue and deferred grant revenue for and as of the periods presented (in thousands):
| Years Ended
| 2020 |  | 2019 |  | 2018
BARDA | $ | 521,652 |  |  | $ | 7,608 |  |  | $ | 6,736 |
Other grant revenue | 7,253 |  |  | 4,565 |  |  | 5,820 |
Total grant revenue | $ | 528,905 |  |  | $ | 12,173 |  |  | $ | 12,556 |
|  | December 31,
|  | 2020 |  | 2019
Deferred grant revenue |  | $ | 5,261 |  |  | $ | 2,777 |
The following table summarizes our total consolidated net revenue from our strategic collaborators for the periods presented (in thousands):
|  | Years Ended December 31,
Collaboration Revenue by Strategic Collaborator: |  | 2020 |  | 2019 |  | 2018 (1)
Merck |  | $ | 26,076 |  |  | $ | 36,608 |  |  | $ | 66,082 |
AstraZeneca |  | 32,624 |  |  | 5,233 |  |  | 45,993 |
Vertex |  | 15,505 |  |  | 6,195 |  |  | 10,437 |
Other |  | 413 |  |  | — |  |  | — |
Total collaboration revenue |  | $ | 74,618 |  |  | $ | 48,036 |  |  | $ | 122,512 |
________ (1) Under ASC 605 The following table summarizes the revenue recognized for the periods presented (in thousands):
|  | Years Ended December 31,
|  | 2020 |  | 2019 |  | 2018
Combined AZ Agreements |  | $ | 18,371 |  |  | $ | 4,650 |  |  | $ | 45,393 |
The following table summarizes the revenue and contra-revenue recognized for the periods presented (in thousands):
|  | Years Ended December 31,
|  | 2020 |  | 2019 |  | 2018
Contra-revenue under the May 2019 Amendment |  | $ | (7,088) |  |  | $ | (5,265) |  |  | $ | — |
Collaboration revenue under the 2015 Merck Agreement |  | 62 |  |  | 492 |  |  | 24,582 |
Total contra-revenue |  | $ | (7,026) |  |  | $ | (4,773) |  |  | $ | 24,582 |

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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130545-203045 + Details
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- References No definition available. + Details
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