Coronavirus testing kits heading to the UK found to be contaminated with Covid-19

https://www.standard.co.uk/news/health/coronavirus-test-kits-contaminated-covid-19-a4403021.html

CDC’s failed coronavirus tests were tainted with coronavirus, feds confirm
A federal investigation found CDC researchers not following protocol.

https://arstechnica.com/science/2020/04/cdcs-failed-coronavirus-tests-were-tainted-with-coronavirus-feds-confirm/