Covid-19 resurges in country: New variant spreads rapidly; this common symptom could be key indicator

Nimbus (NB.1.8.1) is a descendant of the Omicron variant, and was first detected in January 2025. Since then, it has spread quickly across many countries, including the United States, Canada, the United Kingdom, India, and parts of Asia. However, according to the World Health Organization (WHO) the variant remains mild as of now, and does not cause severe illness.