A “glaring scientific breakdown” at the CDC’s main laboratory was behind the federal agency’s failure to quickly make a coronavirus test kit... One of the three test components became contaminated because the way the Centers for Disease Control and Prevention laboratory put the kits together violated sound manufacturing practices... cross contamination because the chemical mixtures were put together into testing kits in a lab space that was also dealing with synthetic coronavirus material. The Food and Drug Administration also concluded the CDC violated its own laboratory standards,