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.
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.