Laitan tämän nyt 3. kerran tähän.
Journal of infectionionin yhteenveto
We did a systematic review of 22 studies from 12 countries including 23,141 CYP. We found that although the pooled prevalence of symptoms across all studies was high, when we restricted our meta-analysis to only those with a SARS-CoV-2 negative control group,
most reported persistent symptoms were equally common in SARS-CoV-2 positive cases and SARS-CoV-2 negative controls. Higher study quality was associated with lower prevalence of all symptoms, except loss of smell and cognitive symptoms.
Edelleenkin pohjaan tähän ja siihen, että nuo long covidia puoltavat tutkimukset on tehty joko ilman kontrolliryhmiä tai ollaan vaan haluttu näyttää jotenking long covid toteen.
EDIT:
"While there has been much recent interest in persistent symptoms in children and young people (CYP) post SARS-CoV-2 infection, the majority of studies to date have been open to significant bias.
The lack of a control group in many studies has made it hard to separate symptoms due to infection from those due to the pressures of a pandemic. Prior to our study, a search of Medline, Cochrane, medRxiv and PROSPERO identified one published narrative review and no meta-analyses specifically examining persistent symptoms in children and young people following SARS-CoV-2 infection."