When the covid-19 pandemic first stormed the globe three years ago, the coronavirus was believed to be largely a respiratory ailment that also damaged the cells that line the blood vessels. But research is now showing that the virus can spread throughout the body and remain lodged in organs. This might offer one clue about the lingering phenomenon of “long covid” and suggest why it will remain a serious problem for individuals and the heath-care system for some time to come. The entire world will have to prepare for a legacy of long-covid sufferers.
It is not yet known how many people have long covid, why and what their prospects for recovery are, let alone what the long-term impact on society will be. The U.S. government reported in August that “no laboratory test can definitively distinguish” long covid from other causes of illness. But some general definitions are that long covid, or “post-acute sequelae of covid-19,” is a series of symptoms that continue or develop after the initial infection, that persist three months or more after the first sickness, and that can include fatigue, shortness of breath, cognitive dysfunction, pain, difficulty sleeping, racing heart rate, gastrointestinal problems and other ailments that interfere with everyday functioning.
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