The odds of developing long COVID dropped as the coronavirus evolved

People vaccinated against the virus saw the biggest decline over time

A woman receives a COVID shot at a pop-up vaccination clinic

A woman receives a COVID shot at a pop-up vaccination clinic in Las Vegas in December 2021, when the omicron variant of the coronavirus began surging. The occurrence of long COVID declined as the coronavirus evolved during the pandemic, especially among vaccinated people.

Ethan Miller/Getty Images

As new varieties of the coronavirus took center stage during the COVID-19 pandemic, the odds of developing long COVID dropped.