LOS ANGELES — You may have come home with it after a recent trip to New England. Or you may have gotten it from that friend or family member who flew in from New York over the holidays.
The newest omicron subvariant of concern is XBB.1.5, and it has arrived in Southern California. This version of the coronavirus is more contagious and more resistant to existing immunity than any of it predecessors.
"It's just the latest and greatest and most infectious variant," said Paula Cannon, a virologist at the University of Southern California. "It's amazing to me that this virus keeps finding one more trick to make itself even more infectious, even more transmissible."
