All about the ‘Nimbus’ and ‘Stratus’, the new COVID variants monitored closely by WHO

Scientists are closely monitoring the rapid global spread of two new Omicron subvariants, Nimbus (NB.1.8.1) and Stratus (XFG). Nimbus, a recombinant virus, is prevalent in Asia, the Western Pacific, and the U.S., with symptoms including a potential razor blade sensation in the throat. Stratus, also a recombinant, is spreading quickly in Europe and India, with hoarseness as a noticeable symptom.