A positive real-time reverse transcription polymerase chain reaction result indicates a definite Zika virus infection, but a negative rRT-PCR result doesn’t exclude an infection, and immunoglobulin M and antibody testing can identify a more recent Zika virus infection.
The new guidance changes the timing of IgM antibody testing and the thresholds of plaque reduction neutralization test. See the full guidance here.
The CDC will update the interim guidance as new rRT-PCR data becomes available.
More articles on Zika virus:
Many Americans unaware of how Zika spreads and 6 other survey findings
WHO doubles suggested abstinence period after traveling to active Zika zones
House speaker calls for relaxed EPA regulations to combat Zika-carrying mosquitoes
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