Doctor: How to avoid frostbite ahead of dangerous cold wishtv.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from wishtv.com Daily Mail and Mail on Sunday newspapers.
The first measure, COVID-19 admission rates, is reactive since it often has a 1-2 weeks lag behind infection rates due to the natural course of the disease.
As new coronavirus variants dominate COVID-19 cases in Chicago, researchers said they were able to detect the presence of the omicron BA.2 subvariant two weeks before it showed up in an individual clinical COVID test by using tampons planted in sewers around the city.