Zika virus is generally only detectable in blood serum during the first week of infection, but toward the end of the week can be difficult to detect, according to the CDC. Based on new information, the CDC is recommending that real-time reverse transcription-polymerase chain reaction, the strategy used to detect Zika viral loads in fluid, be used on urine collected within two weeks of the onset of symptoms.
Although cases of the virus have been reported in all 50 states, all of those have been contracted through travel to countries with outbreaks or sexually transmitted.
More articles on Zika:
Experts design freeze-dried paper-based tool to diagnose Zika
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Molecular mechanics of Zika and microcephaly highlighted in new study
