New Covid Variants Nimbus and Stratus Surge Across Populations
đ Executive Summary COVIDâ19 has not disappeared â but it has evolved. Two newly emergent Omicron subâvariants, NB.1.8.1 (âNimbusâ) and XFG (âStratusâ), are driving fresh surges of infection across multiple global regions, including Europe, the United States and parts of Asia. These subâvariants are highly transmissible and display distinct symptom profiles that are now shaping … Read more