Omicron more likely to reinfect than Delta, no sign of being milder

The risk of reinfection with the Omicron coronavirus variant is more than five times higher and it has shown no sign of being milder than Delta, a study showed, as cases soar across Europe and threaten year-end festivities.

The results of the study by Imperial College London were based on UK Health Security Agency and National Health Service data on people who tested positive for Covid-19 in a PCR test in England between Nov 29 and Dec 11...