Omicron could bring the worst surge of COVID yet in the U.S. — and fast
NPROmicron could bring the worst surge of COVID yet in the U.S. — and fast Enlarge this image toggle caption Samuel Corum/Getty Images Samuel Corum/Getty Images How bad could an omicron surge get this winter? But in the most pessimistic scenario, omicron could trigger a tidal wave of infections that would be worse than last winter's massive surge. "We need to prepare for the worst and hope for the best," says Alessandro Vespignani, a computational epidemiologist at Northeastern University who's also modeling possible impacts of omicron in the United States. In places where the delta surge may have already peaked or is close to peaking, omicron could just "create a longer tail, meaning that it may result in a slower decline in the surge," says Dr. David Rubin, who runs the PolicyLab at Children's Hospital of Philadelphia.