MANY people have persistent cough from omicron! Many have exhaustion for weeks after. . I live in Nova Scotia which is a small place and we still have close to 100 admitted to the hospital weekly and 17 to 20 dying weekly!!
Also , masks make a huge difference. In schools where they are worn there is limited transmission but where they are not worn covid has gotten almost every child in each class .. fast. I know as my daughter teaches in one of these schools. They did not have vomiting kids with fevers in class before the masks were dropped