November 27, 2020 7:59 am COVID-19 Immunity: How Long Do Antibodies Last? COVID-19 patients develop a certain level of immunity after battling the virus, but new studies find it may not last long. US & World Videos 1:20 NFL playoff standings update in Week 15 0:37 Grant DuBose hospitalized after helmet-to-helmet hit 5:55 NewsConference: Can California move past its struggles? 6:12 NewsConference: LA city attorney on sanctuary city status, goals for next year 6:44 NewsConference: Adam Schiff talks possible pardon before office change