According to VnExpress International – People infected with the Omicron variant of Covid often have sore throats and headaches, with Delta loss of smell, while flu and the common cold cause a lot of coughing.
According to VnExpress International – People infected with the Omicron variant of Covid often have sore throats and headaches, with Delta loss of smell, while flu and the common cold cause a lot of coughing.