Contaminated

WASHINGTON – The test kits for detecting the nation’s earliest cases of the novel coronavirus failed because of “likely” contamination at the Centers for Disease Control and Prevention, whose scientists did not thoroughly check the kits despite “anomalies” during manufacturing, according to a new federal review. The review, conducted by two Department of Health and…

Sloppy laboratory practices at the Centers for Disease Control and Prevention caused contamination that rendered the nation’s first coronavirus tests ineffective, federal officials confirmed on Saturday.Two of the three C.D.C. laboratories in Atlanta that created the coronavirus test kits violated their own manufacturing standards, resulting in the agency sending tests that did not work to…