NB.1.8.1 Becomes Dominant COVID-19 Variant in the U.S. NB.1.8.1 COVID-19 variant now accounts for 43% of new U.S. cases, CDC reports, raising fresh concerns about transmission and immunity. “razor blade throat,” a more severe kind of sore throat, can spread more readily and overcome prior immunity. There is still the fever, exhaustion, and cough from […]
