For more context: The team found #SARS-CoV-2 proteins indicative of viral persistence in 25% of people up to 14 months after #COVID. They controlled for vaccination + reinfection. There were very few false positives in the pre-pandemic samples, confirming accuracy of the methods
2/ The viral proteins were found in participant blood. Where did they come from? As described in our paper below, it’s possible that at least some of the proteins “leak” into blood from persistent reservoirs of SARS-CoV-2 in tissue (gut, lungs etc): pubmed.ncbi.nlm.nih.gov/37667052/