San Diego December 22, 2021 6:33 pm Comparing the Different Types of COVID-19 Tests NBC 7’s Jackie Crea spoke with an epidemiologist to compare antigen and PCR tests. US & World Videos 2:32 How water pollution is changing how Imperial Beach lifeguards protect people 2:56 Pro-Palestinian protesters move to downtown jail 3:03 San Diego photographer remembers Callum Robinson, surfer found in Baja 2:41 Friends and family remember 3 surfers who disappeared in Mexico 2:47 Jewish community gathers for Holocaust commemoration in La Jolla