What Doctors Still Don’t Understand About Long COVID
As a pulmonary specialist, I spend most of my clinical time in the hospital—which, during pandemic surges, has meant many long days treating critically ill COVID-19 patients in the ICU. But I also work in an outpatient clinic, where I also treat those same sorts of patients after they’re discharged: people who survived weeks-long hospitalizations but have been dealing ever since with lung damage. Such patients often face the same social and economic factors that made them vulnerable to COVID-19 to begin with, and they require attentive care.
Patients like these undoubtedly suffer what researchers have been calling post-acute sequelae of SARS-CoV-2, or PASC—which, according to one highly publicized recent CDC study, afflicts some 20 percent of COVID-19 survivors ages 18 to 64. Other studies have yielded lower estimates of the condition also called long COVID, and while differences in study methodology account for some of this variability, there’s a more fundamental issue eluding efforts to uncover the one “true” estimate of the likelihood of this condition. Quite simply, long COVID isn’t any one thing.
[From the April 2021 issue: Unlocking the mysteries of long COVID]
The wide spectrum of conditions that fall under the umbrella of long COVID impedes researchers’ ability to interpret estimates of national prevalence based on surveys of symptoms, which conflate
