A French study finds that, of 20 persistent physical symptoms reported by adults who said they had recovered from COVID-19, only 1 was linked to SARS-CoV-2 infection, as indicated by the presence of antibodies to the virus.The researchers, however, said that the results don't discount the presence of symptoms but rather underscore the importance of considering all possible causes in addition to COVID-19, such as other diseases, anxiety, or deconditioning related to the pandemic but not the virus itself.The study, published yesterday in JAMA Internal Medicine, involved analysis of blood samples from 26,823 adult participants who reported recovering from COVID-19.The participants were provided self-sampling dried-blood spot cards from May to