Just look at this dumbfrickery: Covid test kits in the UK infected with the virus! It'll make things hard to stamp out, I imagine. OTOH, there's some encouraging info in the story. Korea has done a LOT of testing and has shown low death rate, for example.
https://www.standard.co.uk/news/health/coronavirus-test-kits-contaminated-covid-19-a4403021.html
https://www.standard.co.uk/news/health/coronavirus-test-kits-contaminated-covid-19-a4403021.html