The UK's Mirror reports:
Many Brits are currently suffering with intense cold like symptoms - including a runny nose, a sore throat, headaches, coughs and a loss of smell - which have been hard to shift even several weeks later.
Brits suffering from miserable colds could actually be enduring breakthrough cases of Covid-19 without realising, potentially allowing the virus to continue to spread.
Over the past few weeks hundreds of thousands of people have been struck down by the fierce return of the common cold.
Anecdotal evidence suggests the 'worst cold ever' has spread widely, possibly fuelled by a dip in immunity after a year and a half of social distancing and mask wearing limited its potential to infect.
Rather than the usual inconveniencing runny nose and cough, the disease has been laying people out.
"The worse cold I have ever had," one Mirror reader reported.
FURTHER READING ON ADE
Antibody dependent enhancement: Unavoidable problems in vaccine development: