Nevada man believed to be first person in U.S. to be infected with COVID-19 twice

Nevada man believed to be first person in U.S. to be infected with COVID-19 twice

Researchers believe a man in Nevada was infected with the coronavirus twice, making him the first patient to be reinfected in the U.S. Doctor Mark Pandori, one of the authors of the study investigating this case, joined CBSN with more on the growing questions about COVID-19 immunity.