Two symptoms have been scratched off the list of common signs of Covid-19, nearly three years after the arrival of the deadly virus.
According to the Zoe Covid app, a sore throat and runny nose - which used to be main indicators of Coronavirus - are no longer deemed major signs.
New Covid strains have been rapidly developing across the globe, and the symptoms related to the infection are also changing quickly, so it is becoming more and more difficult to identify the disease.
