Which would then possibly mean that people may have it and be contagious for a much longer time period than they are saying."Patients are considered “recovered” when throat and nose swabs are negative in two consecutive tests, a CT scan is negative for lung lesions, and they have no fever or other symptoms, according to COVID-19 guidelines by the National Health Commission."
The article also said that people may not have completely eliminated the infection in their lungs, and then test positive again later. So it may not be that they caught it twice but that they weren't completely over it. Perhaps they'll change how they test for being recovered.