CDC whistleblower claims agency has been using wrong Zika test

Robert Lanciotti is chief of the CDC lab responsible for developing tests to diagnose viral diseases such as Zika that are transmitted by mosquitoes, ticks and fleas. Lanciotti was demoted in May after he raised concerns inside and outside the agency about the CDC's decision in the spring to recommend a new test for Zika. That test is substantially less effective than another established test, he said, and misses nearly 40 percent of Zika infections. He also said the agency withheld information about testing differences from state and local public health laboratories.