The new Covid strain, XFG, nicknamed Stratus, is becoming the dominant strain. The World Health Organisation has designated ...

A new variant of Covid, known as XFG or Stratus, is rapidly becoming the dominant strain in the UK, with experts warning it ...

A new Covid-19 variant with a unique symptom is spreading across the globe and has been declared a "variant under monitoring" ...

A new strain of COVID-19 has arrived in time for summer, and experts say it could drive up numbers in Alameda County.