The most common ones were loss of taste and smell, muscle aches and general fatigue.
This is a completely unique study in which we can now better estimate how a percentage of long-term symptoms after coronavirus are affected than ever before, says the study’s first author, PhD student Aranca Ballring at the University of Groningen, to today’s news.
Its evaluation is based on the fact that the researchers used a special method to assess the number of people who had problems due to infection and no other cause.
23 different symptoms
The study is based on a digital questionnaire that was answered by nearly 76,000 people from March 2020 to August 2021. This allowed them to see how people’s health status had changed and to track the prevalence of 23 different symptoms. Questions were asked on 24 occasions.
It turns out that 21.4 percent of infected people have had at least one of the symptoms for three to six months after being diagnosed with Covid-19 or testing positive for SARS-Cov2.
In the control group without a confirmed infection, 8.7 percent had at least one of these symptoms.
So the researchers concluded that the 12.7 percent difference was explained by previous infections.
About 30,000 in Sweden
Previous studies on the long-term coronavirus have come up with very mixed results, from a few tenths of a percent to just over 70 percent, Dagens Nyheter writes.
In Sweden, about 30,000 people have been diagnosed with a post-Covid-19 or post-infectious condition.
The Dutch study is published in the medical journal scalpel.
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