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But for people with more than one possible exposure or ongoing exposure, a positive antibody test cannot tell them when the infection happened.

Another limitation to antibody testing is that even a very good test can result in a high number of false positives in areas where there is not widespread Zika transmission.

The symptoms of cri du chat syndrome vary from case to case.2) Antibody Testing (also called serologic or Ig M testing) looks for proteins the body makes to fight a Zika infection.These proteins, called antibodies, can be detected in the body for some time after a Zika infection.For this reason, a positive antibody test might not be able to tell how long ago you were infected with Zika.For people who had only one possible exposure to Zika (for example, a trip to an area with Zika), the timing of the exposure might help determine when they were infected.