Blood tests appear to miss about half of all recent Zika infections, according to a new study.
As a result, the CDC is changing its testing recommendations. They’re advising doctors to check the urine and blood of patients who’ve had symptoms of the virus for less than 14 days. Previously, the agency recommended only blood tests.
In a recent study done by the Florida Department of Health, 66 people suspected of having Zika infections had their blood and urine tested on the same day.