"Early in the pandemic, public-health officials were clear: The people at increased risk for severe Covid-19 illness were older, immunocompromised, had chronic kidney disease, Type 2 diabetes or serious heart conditions.
The warning proved accurate, but it had the unfortunate effect of giving a false sense of security to people who weren't in those high-risk categories. Once case rates dropped, vaccines became available and fear of the virus wore off, many people let their guard down, ditching masks, spending time in crowded indoor places. If Covid-19 is little more than a bad cold, why continue to worry about it?
Gradually, though, it has become clear that even people with mild cases of Covid-19 can develop long-term serious and debilitating diseases. Long Covid, whose symptoms include months of persistent fatigue, shortness of breath, muscle aches and brain fog, hasn't been the virus's only nasty surprise.
In February 2022, a study found that, for at least a year, people who had Covid-19 had a substantially increased risk of heart disease -- even people who were younger and had not been hospitalized. Researchers at the CDC have found that after having Covid-19, people are at twice the risk of developing a pulmonary embolism and respiratory conditions.
Some scientists now suspect that Covid-19 might be capable of affecting nearly every organ system in the body. It may play a role in the activation of dormant viruses and latent autoimmune conditions people didn't know they had.
Doctors and scientists are now racing to find the causes of long Covid and possible ways to prevent it. "What we'd like to have is a simple blood test that would help people anticipate their risk -- something Labcorp can do," says Jim Heath, president and professor of the Institute for Systems Biology, a nonprofit biomedical research organization in Seattlewhich has identified four risk factors for long Covid.A blood test, he says,would tell people if they are at higher risk of long Covid and whether they should have antivirals on hand to take right away should they contract Covid-19.
If the risks of long Covid had been known, would people have reacted differently, especially given the confusion over masks and lockdowns and variants? Perhaps. At the least, many people might not have assumed they were out of the woods just because they didn't have any of the risk factors.
They might have been more careful in assessing their own risk, and the risk of those around them, and might have taken more precautions -- such as wearing masks or eating outdoors even after the disease got milder." [1]
1. Healthcare (A Special Report) --- If We Knew Then What We Know Now About Covid, What Would We Have Done Differently? In March 2020, the virus held many mysteries. Some early assumptions didn't hold up, while other key findings wouldn't come until much later. If we could do it all over again... Morris, Betsy. Wall Street Journal, Eastern edition; New York, N.Y. [New York, N.Y]. 13 Mar 2023: R.1.