Omicron BA.2 tied to more symptoms and, rarely, brain swelling in kids

(CIDRAP) A UK study suggests that Omicron BA.2 is tied to more symptoms and greater disruption in daily activities than BA.1, and Taiwanese researchers describe fatal cerebral edema in six children hospitalized for BA.2. Imperial College London researchers tracked SARS-CoV-2 transmission and symptoms among 1,542,510 randomly selected English adults, including 17,448 COVID-19 patients, from May 1, 2020, to Mar 31, 2022. Related Study