
NYT | I Rayintakath
Some of these effects, such as chronic fatigue and brain fog, are considered long Covid, defined as symptoms from an infection that persist for at least three months. By some estimates, 400 million people worldwide have been diagnosed with some form of long Covid. But an infection can also lead to other issues, including lung and heart damage and microbiome changes in the gut, that may not always be recognized as long Covid but can still have a lasting effect on our health.