As this summer heats up, so has the spread of the hot new version of COVID-19. Why it matters: This subvariant of Omicron called BA.5 — the most transmissible subvariant yet — quickly overtook previous strains to become the dominant version circulating in the U.S. and much of the world. BA.5 is so transmissible — and different enough from previous versions — that even those with immunity from prior Omicron infections may not have to wait long before falling ill again. What they're saying: "I had plenty of friends and family who said: 'I didn't want to get it but I'm sort of glad I got it because it's out of the way and I won't get it again,'" Bob Wachter, chairman of the University of California, San Francisco Department of Medicine, told Axios. "Unfortunately, that doesn't hold the way it once did." - "Even this one bit of good news people found in the gloom, it's like, 'Sorry,'" Wachter said.
State of play: This week, the CDC reported that BA.5 became the dominant variant in the U.S., accounting for nearly 54% of total COVID cases. Studies show extra mutations in the spike protein make the strain three or four times more resistant to antibodies, though it doesn't appear to cause more serious illness. - Hospital admissions are starting to trend upward again, CDC data shows, though they're still well below what was seen during the initial spread of Omicron.
Yes, but: "I'm certainly hearing about more reinfections and more fairly quick reinfections than at any other time in the last two and a half years," Wachter said. The big picture: Another summertime wave of cases could prolong the pandemic, coming after many public health precautions were lifted and with available vaccines losing their efficacy against the ever-evolving virus. Go deeper. |
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