Lessons unlearned: Four years before the CDC fumbled coronavirus testing, the agency made some of the same mistakes with Zika

In both emergencies, the CDC pressured the public health labs to shelve the effective tests and to use less reliable test kits manufactured by the agency that sought to detect multiple pathogens. The agency stood behind the troubled test kits despite internal data indicating they were flawed. Ultimately, the CDC notified the public lab officials that they could switch to more effective tests.

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