The CDC's contaminated first test kits
In early February 2020 the CDC shipped its own COVID-19 diagnostic kits to state public-health labs. Many kits gave false or inconclusive results because one component was flawed, likely from contamination at the Atlanta lab that made it. Because regulatory rules and institutional habit kept outside labs from quickly deploying their own tests, the U.S. lost weeks of testing while the virus spread undetected.
