Patients only get retested after they appear to have recovered. That means their symptoms have subsided.
You can get super pedantic with semantics and call it a false negative, which might be technically true if the virus subsides but has the ability to persist - which is one of the potential mechanisms for reinfection, but has not been confirmed.
But none of that changes the fact that people are getting reinfected and sometimes dropping dead after appearing to have recovered by all measures. This is clearly different to 'it's just the flu bro'.
You can get super pedantic with semantics and call it a false negative, which might be technically true if the virus subsides but has the ability to persist - which is one of the potential mechanisms for reinfection, but has not been confirmed.
But none of that changes the fact that people are getting reinfected and sometimes dropping dead after appearing to have recovered by all measures. This is clearly different to 'it's just the flu bro'.