New Covid variant 'Nimbus' symptoms: 'Painful' health issues to watch out for

New Covid variant symptoms: A new Covid-19 variant, NB.1.8.1, nicknamed "Nimbus," is spreading globally, including in the US and Asia. While more transmissible, it doesn't appear more dangerous. A key symptom is a severe sore throat, described as "razor blade throat," alongside typical symptoms like congestion, fatigue, and fever.