claim: expert reaction to people being re-tested positive for coronavirus before initial recovery
evidence_1: clearly we need more information about these patients, such as were there underlying medical conditions or a change in circumstances that might have allowed the virus to escape immune control?", "however, the report reinforces the fact that we have to investigate all such findings really thoroughly and report such information if we are to make the best decisions based on sound scientific evidence.", "she has a prolonged excretion of virus from her initial infection and tests were either not done or were not done sufficiently well or enough to confirm clearance.", 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  "although coronaviruses generally cause short- term self-limiting infections which are cleared, there is some evidence in the scientific literature for persistent infections of animal coronaviruses (mainly in bats).", "this highlights the need for more research into the biology of the new coronavirus, it is very much early days in our efforts to understand it. on case in japan: prof paul hunter, professor in medicine, university of east anglia (uea), said: regarding this reported case: there is so much we do not know about this case to give a properly informed opinion."
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  )