New Covid mutant BA 2 75 raises concerns with scientists as it spreads across the world stuff.co.nz - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from stuff.co.nz Daily Mail and Mail on Sunday newspapers.
New COVID variants and subvariants are driving an increase in positive cases across Chicago, as well as other parts of the country. But are there new symptoms.
As the U.S. continues to battle the spread of the highly-transmissible omicron subvariant BA.5, a new mutant that could be competitive with the super contagious.