As the Omicron variant swept Italy late last year, it was unvaccinated elderly people and those who had not had a booster dose four or more months after their initial shots who were most likely to go to hospital or die from COVID-19, according to data and doctors.
Cases in hospitals have started to plateau, offering a sign that the current wave - which started with the emergence of Omicron in late November and pushed infections to record highs - may be close to peaking, doctors say.
