Amid the pandemic, Disney World and Seaworld will reopen their doors. LOS ANGELES - The U.S. Centers for Disease Control and Prevention (CDC) has updated its guidance on the use and reliability of antibody testing, saying that in a population where prevalence of COVID-19 is low, “less than half of those testing positive will truly have antibodies.” The new guidance comes as antibody testing has expanded this month with hopes of understanding just how many Americans have been infected by the new coronavirus. RELATED: CoronavirusNOW.com, FOX launches national hub for COVID-19 news and updates When testing for the virus, there are two methods, and both are critical in combating the spread of COVID-19, according to Washington University School