February 4, 2022 2:58 pm CDC Increases Wastewater Test Sites Searching for Traces of Coronavirus To flag potential outbreaks of coronavirus, the Center for Disease Control and Prevention will begin testing an additional 250 wastewater sites across the United States. US & World Videos 1:20 Gigi Hadid wows in sweeping Met Gala look 1:34 Nicole Kidman floored over Olivia Rodrigo's AMC ad tribute 1:12 Ariana Grande channels Glinda at 2024 Met Gala 3:45 Gabrielle Union and Dwyane Wade's daughter had cutest reaction to mom's Met Gala dress 1:35 Rita Ora reveals Taika Waititi's last-minute change to her Met Gala dress: ‘Thank God'