FIRST CASE  OF COVID-19 REINFECTION  HONG KONG RESEARCHERS REPORT

By Jacqueline Howard, CNN   

A 33-year-old man living in Hong Kong had Covid-19 twice this year, according to preliminary research.

a close of a hand: HKUMed: Pseudo-colour scanning electron micrograph of SARS-CoV-2 grown in culture from a patient isolate. After 24 hours in culture there are large numbers of orange viral particles on the surface of the cell (blue). Image courtesy of LKS Faculty of Medicine, Department of Electrical and Electronic Engineering (K.Tsia, K.Lee and Q.Lai), and Electron Microscopy Unit, The University of Hong Kong© The University of Hong Kong HKUMed: Pseudo-colour scanning electron micrograph of SARS-CoV-2 grown in culture from a patient isolate. After 24 hours in culture there are large numbers of orange viral particles on the surface of the cell (blue). Image courtesy of LKS Faculty of Medicine, Department of Electrical and Electronic Engineering (K.Tsia, K.Lee and Q.Lai), and Electron Microscopy Unit, The University of Hong Kong

He had symptoms the first time around, but no obvious symptoms the second time, the team at the University of Hong Kong reported Monday.