Time will tell, but from that article: >Scientists in and outside China agree that reinfection is a highly unlikely explanation for the patients who retest pos

Time will tell, but from that article: >Scientists in and outside China agree that reinfection is a highly unlikely explanation for the patients who retest positive. They say testing errors are more likely to blame — either false negatives that resulted in patients being discharged too early, or false positives when they retested and were taken back into hospital.