As the virus mutates, the most common COVID symptoms appear to be changing, too
SARS-CoV-2, the virus that causes COVID, is devastating precisely because it can worm its way into so many different organs and systems in the body. That manifests as different symptoms, from fever to trouble breathing, although an infection can be asymptomatic, too — that is, no symptoms at all.
Throughout the pandemic, there have been a few telltale signs of COVID infection. The loss of sense of smell and taste were chief among them. But as the virus has mutated again and again, creating new strains like Typhon (BQ.1) and Gryphon (XBB) which can evade some of our tools to fight it, it seem that the symptoms of COVID may have changed as well.
Recent estimates published by the Centers for Disease Control and Prevention on Friday pegged Typhon and its close relative Cerberus (BQ.1.1) as making up 27 percent of cases, an 11 percent increase from last week. Meanwhile, cases of BA.5, the strain that has dominated cases for the majority of summer, dipped below 50 percent for the first time in months.
Indeed, emerging data suggests the symptoms of COVID are changing with new variants. And, they can differ regardless of whether you've been vaccinated or not, or previously infected. Newly released data from the ZOE Health Study, which maintains the COVID Symptom Tracker app, finds that the dominant symptoms have shifted.
The app was originally launched in March 2020. It quickly logged one million users, who typed in how COVID was making them feel, allowing researchers to pin down some of the most common COVID symptoms. It was part of the reason why it became well-known that anosmia (loss of smell and taste) is a key symptom of the original COVID strain.
More recently, ZOE crunched the data from over 4.8 million users and found that after two vaccinations, the top-ranking symptoms were sore throat, runny nose, blocked nose, persistent cough, headache, in that order. (Vaccines can protect against severe disease, which generally means hospitalization or death, but breakthrough infections are not unheard of, although far less severe than infections in the unvaccinated.)
Loss of smell has slipped to the number nine slot, while shortness of breath is down at number 30 for this group. ZOE says this indicates "the symptoms as recorded previously are changing with the evolving variants of the virus."
Just one dose of a vaccine can shift the order of most common symptoms to headache, runny nose, sore throat, sneezing and then persistent cough. For those who haven't received a vaccine at all, the symptoms are generally closer to the original ranking from 2020: headache, sore throat, runny nose, fever and persistent cough.
However, loss of smell has slipped to the number nine slot, while shortness of breath is down at number 30 for this group.