“There have been many cases when a patient during treatment will test negative one day and positive another.”

Sorry for the gloom news, but here’s more evidence that we have no idea what is happening. Tough environment in which to lead (and follow). https://hotair.com/archives/allahpundit/2020/04/09/hoo-boy-south-korean-study-finds-virus-might-reactivating-recovered-patients/

Just adding this to this thread, fyi. https://www.reuters.com/article/us-health-coronavirus-china-patients-ins-idUSKCN2240HI