New Covid Strain XFG Shows Unusual Symptom As Experts Urge Testing And Caution

Health experts have identified a surprising symptom linked to one of the new Covid variants spreading across the UK. The strain, known as XFG or “Stratus,” has become one of the most common versions of the virus currently in circulation.

Doctors say that while XFG does not appear to cause more severe illness than earlier variants, its symptoms may differ slightly, making it harder to distinguish from the common cold.

Dr Kaywaan Khan, a Harley Street GP and founder of the Hannah London Clinic, told The Mirror that many patients infected with the strain are reporting throat-related issues. “You can still get some of the same features as with the common cold, like a cough or runny nose, but we are seeing a lot more hoarseness of voice,” Dr Khan said.

He explained that this symptom is not unique to Covid but may signal the infection in some cases. “It’s not a defining feature, you can experience this with the common cold too, but with Covid, you can get a bit of laryngitis and this hoarse voice,” he added.

The doctor noted that this differs from earlier Covid strains that often caused a persistent cough or a complete loss of smell. “You can get a razor-sharp sore throat, but also loss of taste,” he said. “It’s probably less common than the first strains, but that can indicate Covid.”

Scientists say it is natural for viruses to evolve as they spread, and these small genetic changes can produce new variants. While the current mutations do not seem to make the virus more dangerous, they may increase how easily it spreads.

Covid continues to cause a wide range of symptoms, including headaches, fatigue, coughing, and a blocked or runny nose. Because of this, many people mistake it for a seasonal cold or flu.

Health experts are urging people who feel unwell to stay home, especially if they might come into contact with vulnerable individuals. If going out is unavoidable, wearing a mask, washing hands frequently, and disposing of tissues properly remain important precautions.

Dr Khan also stressed the importance of early testing, particularly for people with underlying health conditions or weakened immune systems. “With Covid, you can get antivirals, but this will only be beneficial if you get tested really early,” he said.

The NHS continues to offer free Covid vaccines to those over 75, providing strong protection even against newer strains. The UK Health Security Agency has also encouraged people to get vaccinated against flu and RSV as winter approaches.

A spokesperson for the agency said, “It’s normal for viruses to mutate and change. As more data becomes available, we’ll understand better how to protect ourselves and the most vulnerable. The most important thing is for those eligible to get their vaccination when it is due.”