AUTHOR=Westermeier Francisco , Lacerda Eliana Mattos , Scheibenbogen Carmen , SepĂșlveda Nuno TITLE=Editorial: Current Insights Into Complex Post-infection Fatigue Syndromes With Unknown Aetiology: The Case of Myalgic Encephalomyelitis/Chronic Fatigue Syndrome and Beyond JOURNAL=Frontiers in Medicine VOLUME=9 YEAR=2022 URL=https://www.frontiersin.org/journals/medicine/articles/10.3389/fmed.2022.862953 DOI=10.3389/fmed.2022.862953 ISSN=2296-858X