Fig. 4From: Increased interleukin-6 is associated with long COVID-19: a systematic review and meta-analysisComparison of the levels of IL-6 in the long COVID-19, non-PASC, and healthy individual groups. A Forest plot comparing long COVID-19 versus healthy individuals. B Forest plot comparing long COVID-19 versus non-PASC. Ref.: reference; *, standard deviation (pg/ml); #, total number of participants involved in the study or cohortBack to article page