Zika virus (ZIKV) spread to Puerto Rico likely originated from southeastern Brazil approximately 8.5 months earlier than blood donation screening for ZIKV was initiated, but the time of ZIKV introduction… Click to show full abstract
Zika virus (ZIKV) spread to Puerto Rico likely originated from southeastern Brazil approximately 8.5 months earlier than blood donation screening for ZIKV was initiated, but the time of ZIKV introduction in the blood donor population remains unknown.
               
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