Increased interleukin-6 is associated with long COVID-19: a systematic review and meta-analysis.

"Declarations Ethics approval and consent to participateNot applicable. Consent for publicationNot applicable. Competing interestsXiao-Nong Zhou is the Editor-in-Chief of Infectious Diseases of Poverty. He was not involved in the peer review or handling of the manuscript. The authors have no other competing interests to disclose. Competing interests Xiao-Nong Zhou is the Editor-in-Chief of Infectious Diseases of Poverty. He was not involved in the peer review or handling of the manuscript. The authors have no other competing interests to disclose."

"Funding This study was financially supported in part by the Science and Technology Innovation Project Fund of the School of Global Health, Shanghai Jiao Tong University School of Medicine (Grant No. SGHKJCX2021-04). The sponsor played no roles in the study design; in the collection, analysis, or interpretation of the data; in writing the report; or in the decision to submit the article for publication."