COVID is less severe with Omicron than Delta, U.S. study suggests

The Omicron variant appears to result in less severe COVID-19 than seen during previous periods of high coronavirus transmission including the Delta wave, with shorter hospital stays, less need for intensive care and fewer deaths, according to a new U.S. study. However, the fast-spreading Omicron variant has led to record numbers of infections and hospitalizations, straining the U.S. healthcare system.