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View all search resultsThe Tokyo metropolitan government reported 16,878 coronavirus cases, surpassing the 10,000 mark for a second straight day and more than doubling from the level a week earlier. Osaka Prefecture also logged 10,452 cases, topping 10,000 for the first time since Feb. 26.
Vaccinated patients with Omicron BA.1 breakthrough infections developed antibodies that could neutralize that virus plus the original SARS-CoV-2 virus, but the Omicron sublineages circulating now have mutations that allow them to evade those antibodies, researchers from China reported on Friday in Nature.
BA.2 now represents nearly 86 percent of all sequenced cases, according to the World Health Organization. It is even more transmissible than its highly contagious Omicron siblings, BA.1 and BA.1.1, however the evidence so far suggests that it is no more likely to cause severe disease.
New cases over the previous 24 hours published on Sunday stood at 81,283, pushing a 7-day moving average to 89,002, compared with just over 60,000 average new cases one week earlier. The number of cases per 100,000 inhabitants also reached their highest value level since Feb. 18.