coronavirus December 23, 2020 11:22 pm Researchers Say Sewers Could Be Key to Monitoring COVID-19 Outbreaks We can learn about the spread of COVID-19 from what is in our wastewater. Carolyn Johnson reported on NBC4 News on Wednesday, Dec. 23, 2020. US & World Videos 2:56 USC faculty march in support of pro-Palestinian protesters 2:09 LAPD on tactical alert due to UCLA protests 2:38 Photographer recounts violence at UCLA protest, counter-protest 3:33 Crowd of protesters grow at UCLA despite order to disperse 2:52 Jewish student recounts injury during UCLA protest
