Zika virus RNA has been detected in semen samples collected <370 days after symptom onset. We report unusual persistence of Zika virus RNA in semen, confirmed by sequencing at 515 days after symptom onset and detectable for >900 days, in a patient with immunosuppression.
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We thank Tim Brooks, Steve Pullen, Azim Ansari, Megan MacDiarmid, and Paul Klenerman for their valuable contributions.
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