related_tweet: @nothatsnotok @welshladycymru @drbarnesbangor @maizydaizyzzzz also, we dont have a test for covid. we have a test for sars-cov2 which can cause covid-19 but it can also cause nothing and it can also cause the common cold. a postitive pcr for sars-cov-2 is not a positive for covid-19, you should know this if you are an md.