![]() to report it to the Washington State Immunization Information System (WAIIS) within 24 hours. The evolution of a veritable XBB-Delta combo isn’t an inevitability, though, Rajnarayanan says. Cumulative Cases, Hospitalizations and Deaths by County. So far, variants with Delta signature mutations are still lingering in New Zealand and the European Union, Rajnarayanan says. ![]() Trackers are eyeing variants that have a mutation in the spike protein that could cause such a phenomenon. Hospitalizations can, however, be expected to rise if variants that combine the transmissibility of XBB with the lung involvement of Delta catch on, in China or elsewhere. It remains to be seen whether hospitalizations will rise in China, Rajnarayanan and fellow variant tracker Ryan Gregory-a Canadian biologist who has assigned “street names” to so-called high-flying variants like XBB.1.5, dubbed “Kraken”-tell Fortune. So far, XBB spawn have remained relatively innocuous for those not at increased risk of severe disease, according to the World Health Organization’s latest situation report, released Thursday. the case rate has more than tripled over the last 14-day period. 100,000 new cases of COVID in US in just 24 hours. ![]() Increased circulation of XBB variants in China-and elsewhere-is likely to result in the evolution of new XBB variants, Rajnarayanan said. The United States reached 100,000 new cases of COVID-19 in just 24 hours. When it comes to XBB variants, “the rest of the world has seen them all.” But up until recently, “China hasn’t,” he says, adding that the country has a substantial population at high risk of severe outcomes from COVID owing to age, immune status, and comorbid conditions.
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