Spontaneous, persistent, T cell–dependent IFN-γ release in patients who progress to Long Covid SciencePrevalence of persistent SARS-CoV-2 in a large community surveillance study Nature.comPossible Long Covid Cause Identified: Suggests Protein Might Be Culprit—And Medication Might Cure It ForbesStudy reveals high number of persistent COVID-19 infections in the general population University of OxfordLong COVID linked to persistently high levels of inflammatory protein: A potential biomarker and target for treatments Medical Xpress