With shots and infections, the most common COVID symptoms have shifted

As people build up immunity to SARS-CoV-2 through vaccines, boosters, and infections, the most commonly reported symptoms of COVID-19 have shifted, making the deadly pandemic infection more difficult for many people to distinguish from standard cold-weather viruses.

That's according to recent survey data collected in the ZOE COVID Study, an app-based study with over 4 million users that was created by researchers at Massachusetts General Hospital, Harvard University, King's College London, and the health science company, ZOE.

Since COVID-19 emerged, the common symptoms that have topped standard lists include fever, chills, a persistent cough, and shortness of breath. As the virus spread around the planet, loss of taste and smell were also reported as telltale signs. But these days, those symptoms are almost completely absent from the top five. According to the new survey data taken over several recent weeks amid the spread of omicron subvariants, for those who are fully vaccinated, the top five symptoms of a breakthrough infection are (in order): sore throat, runny nose, blocked nose, persistent cough, and headache. Only persistent cough hangs on from the original list of top symptoms, but it is down to the fourth most common symptom. A loss of smell came in as the sixth most common symptom, and fever trailed at number eight. Shortness of breath ranked 29th.