(("Post-Acute COVID-19 Syndrome"[MeSH Major Topic] OR "post COVID"[Title] OR "post-acute COVID"[Title] OR "long COVID"[Title] OR (("COVID"[Title] OR "SARS-CoV-2"[Title]) AND ("Post-Infectious Disorders"[MeSH Terms] OR "T-Cell Exhaustion"[MeSH Terms] OR "Coinfection"[MeSH Terms] OR "long haul*"[Title] OR "post acute"[Title] OR "sequelae"[Title] OR "post infection*"[Title] OR "post infectious*"[Title] OR "post recovery"[Title] OR "dysfunction*"[Title] OR "dysregulat*"[Title] OR "manifestation*"[Title] OR "complication*"[Title] OR "new onset"[Title] OR "newly onset"[Title] OR "activat*"[Title] OR "reactivat*"[Title] OR "secondary infect*"[Title] OR "coinfect*"[Title]))) NOT ("covid vaccin*"[Title] OR "covid 19 vaccin*"[Title] OR "COVID vaccine"[Title:~2] OR "COVID vaccines"[Title:~2] OR "COVID vaccination"[Title:~2] OR "COVID vaccinations"[Title:~2] OR "COVID 19 vaccine"[Title:~2] OR "COVID 19 vaccines"[Title:~2] OR "COVID 19 vaccination"[Title:~2] OR "COVID 19 vaccinations"[Title:~2])) AND "english"[Language]