A sharp sore throat that feels like “razor blades” is being reported as a warning sign of new Covid variants. Stratus (XFG) and Nimbus (NB.1.8.1) are driving a surge in infections across Britain, with cases doubling since August.
Doctors say these strains don’t appear more dangerous than earlier versions but spread quickly due to genetic changes. “Patients describe severe pain, as if their throat is cut with blades,” explained Dr. Aaron Glatt. Alongside this, fatigue, dry cough, fever, and loss of taste or smell remain common symptoms.

In the UK, positivity rates and hospital admissions have climbed steadily in recent weeks. Health chiefs are urging millions to get winter Covid and flu vaccines, especially older adults, care home residents, and those with weak immune systems. Over-75s and pregnant women are among those eligible for free boosters, while private jabs are available in pharmacies.
Experts stress that the new variants are not causing more severe illness, but vulnerable groups remain at risk. The key message: stay cautious, protect loved ones, and act quickly if symptoms appear. Would you know what to do if Nimbus hit your household?
