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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2022 | Mar. 31, 2021
Statement Of Income And Comprehensive Income [Abstract] |  |
Net loss | $ (12,284) | $ (17,457)
Other comprehensive (loss) income |  |
Unrealized losses on available-for-sale investments, net of taxes | (1,486) | (218)
Comprehensive loss | (13,770) | (17,675)
Total comprehensive loss attributable to Cerus Corporation | $ (13,770) | $ (17,675)

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