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0:{"rsc":["$","$1","c",{"children":[["$","div",null,{"children":[["$","header",null,{"className":"mb-8","children":[["$","h1",null,{"className":"text-3xl font-bold tracking-tight text-foreground","children":"Association with Symptoms"}],["$","p",null,{"className":"mt-3 max-w-3xl text-lg leading-relaxed text-muted-foreground","children":"Summaries of cohort studies examining whether persistent spike protein detection correlates with multi-system symptoms — including findings of association in subsets and null results in others."}]]}],["$","aside",null,{"role":"note","aria-label":"Medical disclaimer","className":"rounded-lg border border-amber-300/60 bg-amber-50 px-4 py-3 text-sm text-amber-950 dark:border-amber-700/50 dark:bg-amber-950/40 dark:text-amber-100","children":["$","div",null,{"className":"flex gap-3","children":[["$","$L2",null,{"iconNode":[["path",{"d":"m21.73 18-8-14a2 2 0 0 0-3.48 0l-8 14A2 2 0 0 0 4 21h16a2 2 0 0 0 1.73-3","key":"wmoenq"}],["path",{"d":"M12 9v4","key":"juzpu7"}],["path",{"d":"M12 17h.01","key":"p32p05"}]],"className":"lucide-triangle-alert mt-0.5 h-4 w-4 shrink-0 text-amber-600 dark:text-amber-400","aria-hidden":"true"}],["$","p",null,{"children":[["$","strong",null,{"children":"Disclaimer:"}]," This is not medical advice. Consult a healthcare professional. Data is evolving and subject to scientific revision."]}]]}]}],["$","div",null,{"className":"mt-8 space-y-6","children":[["$","article","swank-association",{"className":"rounded-xl border border-border bg-card p-6","children":[["$","div",null,{"className":"flex flex-wrap items-start justify-between gap-3","children":[["$","h2",null,{"className":"text-lg font-semibold text-foreground","children":"Swank & Walt — Circulating spike in post-vaccine individuals"}],["$","span",null,{"className":"inline-flex items-center rounded-full border px-2.5 py-0.5 text-xs font-medium bg-[#ff9800]/10 text-[#e64a19] border-[#ff9800]/30 dark:text-[#ff9800] dark:border-[#ff9800]/40","aria-label":"Evidence level: Medium","children":["Evidence: ","Medium"]}]]}],["$","p",null,{"className":"mt-3 leading-relaxed text-foreground","children":"In a cohort of individuals with post-vaccination symptoms, a subset showed detectable circulating spike protein months after vaccination. Some participants reported multi-system symptoms (fatigue, neuropathy, cognitive issues) that correlated with persistence in certain analyses, though the study was not designed to establish causality."}],["$","div",null,{"className":"mt-4","children":[["$","h3",null,{"className":"text-sm font-semibold text-foreground","children":"Limitations"}],["$","ul",null,{"className":"mt-2 list-inside list-disc space-y-1 text-sm text-muted-foreground","children":[["$","li","Observational design; no randomized controls",{"children":"Observational design; no randomized controls"}],["$","li","Selection bias toward symptomatic individuals seeking care",{"children":"Selection bias toward symptomatic individuals seeking care"}],["$","li","Assay sensitivity limits detection in low-level carriers",{"children":"Assay sensitivity limits detection in low-level carriers"}],["$","li","Symptom-spike correlation not consistent across all subgroups",{"children":"Symptom-spike correlation not consistent across all subgroups"}]]}]]}],["$","div",null,{"className":"mt-4","children":[["$","h3",null,{"className":"text-sm font-semibold text-foreground","children":"Sources"}],["$","ul",null,{"className":"mt-2 space-y-1","children":[["$","li","swank2023",{"className":"text-sm text-muted-foreground","children":["$","a",null,{"href":"https://www.ahajournals.org/doi/10.1161/CIRCULATIONAHA.122.061025","target":"_blank","rel":"noopener noreferrer","className":"text-[#e64a19] hover:text-[#ff9800] hover:underline","children":["Swank DL, et al."," ","Persistent circulating SARS-CoV-2 spike protein in individuals post-COVID-19 vaccination",". ","$L3"," (",2023,")","$L4"]}]}]]}]]}]]}],"$L5","$L6","$L7"]}],"$L8"]}],null,"$L9"]}],"isPartial":false,"staleTime":300,"varyParams":null,"buildId":"ouB_kPb3CWuV1XWSdyqtI"}
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5:["$","article","fehrer-tissue-symptoms",{"className":"rounded-xl border border-border bg-card p-6","children":[["$","div",null,{"className":"flex flex-wrap items-start justify-between gap-3","children":[["$","h2",null,{"className":"text-lg font-semibold text-foreground","children":"Fehrer et al. — Tissue persistence and post-vaccine sequelae"}],["$","span",null,{"className":"inline-flex items-center rounded-full border px-2.5 py-0.5 text-xs font-medium bg-muted/10 text-muted-foreground border-border","aria-label":"Evidence level: Low","children":["Evidence: ","Low"]}]]}],["$","p",null,{"className":"mt-3 leading-relaxed text-foreground","children":"Autopsy and biopsy data from individuals with post-acute sequelae following COVID-19 vaccination found vaccine-derived spike protein and mRNA in blood and multiple tissues up to 6 months. Multi-system symptom patterns (cardiovascular, neurological, autonomic) were described in the case series, but direct mechanistic links remain unproven."}],["$","div",null,{"className":"mt-4","children":[["$","h3",null,{"className":"text-sm font-semibold text-foreground","children":"Limitations"}],["$","ul",null,{"className":"mt-2 list-inside list-disc space-y-1 text-sm text-muted-foreground","children":[["$","li","Small autopsy/biopsy sample size",{"children":"Small autopsy/biopsy sample size"}],["$","li","Preprint; not yet fully peer-reviewed at time of site compilation",{"children":"Preprint; not yet fully peer-reviewed at time of site compilation"}],["$","li","Cannot distinguish vaccine artifact persistence from unrelated pathology",{"children":"Cannot distinguish vaccine artifact persistence from unrelated pathology"}],["$","li","Symptom heterogeneity complicates correlation analysis",{"children":"Symptom heterogeneity complicates correlation analysis"}]]}]]}],["$","div",null,{"className":"mt-4","children":[["$","h3",null,{"className":"text-sm font-semibold text-foreground","children":"Sources"}],["$","ul",null,{"className":"mt-2 space-y-1","children":[["$","li","fehrer2024",{"className":"text-sm text-muted-foreground","children":["$","a",null,{"href":"https://www.medrxiv.org/content/10.1101/2024.11.11.24317084v1","target":"_blank","rel":"noopener noreferrer","className":"text-[#e64a19] hover:text-[#ff9800] hover:underline","children":["Fehrer C, et al."," ","Vaccine-derived spike protein and mRNA persist for up to 6 months in blood and tissues of patients with post-acute sequelae following COVID-19 vaccination",". ",["$","em",null,{"children":"medRxiv (preprint)"}]," (",2024,")",["."," ",["$","span",null,{"className":"font-mono text-xs","children":["doi:","10.1101/2024.11.11.24317084"]}]]]}]}]]}]]}]]}]
6:["$","article","no-correlation-studies",{"className":"rounded-xl border border-border bg-card p-6","children":[["$","div",null,{"className":"flex flex-wrap items-start justify-between gap-3","children":[["$","h2",null,{"className":"text-lg font-semibold text-foreground","children":"Studies showing no or weak symptom correlation"}],["$","span",null,{"className":"inline-flex items-center rounded-full border px-2.5 py-0.5 text-xs font-medium bg-[#ff9800]/10 text-[#e64a19] border-[#ff9800]/30 dark:text-[#ff9800] dark:border-[#ff9800]/40","aria-label":"Evidence level: Medium","children":["Evidence: ","Medium"]}]]}],["$","p",null,{"className":"mt-3 leading-relaxed text-foreground","children":"Several population-based and controlled studies have not found a consistent association between circulating spike detection and symptom burden in general vaccinated populations. Detection rates in asymptomatic individuals and the role of assay false positives/false negatives remain active areas of investigation."}],["$","div",null,{"className":"mt-4","children":[["$","h3",null,{"className":"text-sm font-semibold text-foreground","children":"Limitations"}],["$","ul",null,{"className":"mt-2 list-inside list-disc space-y-1 text-sm text-muted-foreground","children":[["$","li","Heterogeneous symptom definitions across studies",{"children":"Heterogeneous symptom definitions across studies"}],["$","li","Many studies lack ultra-sensitive spike assays",{"children":"Many studies lack ultra-sensitive spike assays"}],["$","li","Healthy control comparison groups often small",{"children":"Healthy control comparison groups often small"}]]}]]}],["$","div",null,{"className":"mt-4","children":[["$","h3",null,{"className":"text-sm font-semibold text-foreground","children":"Sources"}],["$","ul",null,{"className":"mt-2 space-y-1","children":[["$","li","swank2023",{"className":"text-sm text-muted-foreground","children":["$","a",null,{"href":"https://www.ahajournals.org/doi/10.1161/CIRCULATIONAHA.122.061025","target":"_blank","rel":"noopener noreferrer","className":"text-[#e64a19] hover:text-[#ff9800] hover:underline","children":["Swank DL, et al."," ","Persistent circulating SARS-CoV-2 spike protein in individuals post-COVID-19 vaccination",". ",["$","em",null,{"children":"Circulation"}]," (",2023,")",["."," ",["$","span",null,{"className":"font-mono text-xs","children":["doi:","10.1161/CIRCULATIONAHA.122.061025"]}]]]}]}],["$","li","systematicReview2026",{"className":"text-sm text-muted-foreground","children":["$","a",null,{"href":"https://link.springer.com/article/10.1186/s43094-026-00939-2","target":"_blank","rel":"noopener noreferrer","className":"text-[#e64a19] hover:text-[#ff9800] hover:underline","children":["Various (systematic review)"," ","The persistence of COVID-19 vaccine artifacts in bodily fluids and tissues: a systematic review",". ",["$","em",null,{"children":"BMC Infectious Diseases"}]," (",2026,")",["."," ",["$","span",null,{"className":"font-mono text-xs","children":["doi:","10.1186/s43094-026-00939-2"]}]]]}]}]]}]]}]]}]
7:["$","article","multi-system-correlation",{"className":"rounded-xl border border-border bg-card p-6","children":[["$","div",null,{"className":"flex flex-wrap items-start justify-between gap-3","children":[["$","h2",null,{"className":"text-lg font-semibold text-foreground","children":"Multi-system symptom patterns in persistent-carrier cohorts"}],["$","span",null,{"className":"inline-flex items-center rounded-full border px-2.5 py-0.5 text-xs font-medium bg-muted/10 text-muted-foreground border-border","aria-label":"Evidence level: Low","children":["Evidence: ","Low"]}]]}],["$","p",null,{"className":"mt-3 leading-relaxed text-foreground","children":"In subsets of patients with prolonged spike detection, reports include overlapping cardiovascular, neurological, and autonomic symptoms reminiscent of post-acute infection syndromes. Whether this reflects shared immunological pathways, endothelial dysfunction, or reporting bias is not yet resolved."}],["$","div",null,{"className":"mt-4","children":[["$","h3",null,{"className":"text-sm font-semibold text-foreground","children":"Limitations"}],["$","ul",null,{"className":"mt-2 list-inside list-disc space-y-1 text-sm text-muted-foreground","children":[["$","li","Overlap with long COVID symptom profiles confounds attribution",{"children":"Overlap with long COVID symptom profiles confounds attribution"}],["$","li","No validated clinical biomarker threshold for treatment decisions",{"children":"No validated clinical biomarker threshold for treatment decisions"}],["$","li","Psychosocial and functional factors not fully accounted for",{"children":"Psychosocial and functional factors not fully accounted for"}]]}]]}],["$","div",null,{"className":"mt-4","children":[["$","h3",null,{"className":"text-sm font-semibold text-foreground","children":"Sources"}],["$","ul",null,{"className":"mt-2 space-y-1","children":[["$","li","swank2023",{"className":"text-sm text-muted-foreground","children":["$","a",null,{"href":"https://www.ahajournals.org/doi/10.1161/CIRCULATIONAHA.122.061025","target":"_blank","rel":"noopener noreferrer","className":"text-[#e64a19] hover:text-[#ff9800] hover:underline","children":["Swank DL, et al."," ","Persistent circulating SARS-CoV-2 spike protein in individuals post-COVID-19 vaccination",". ",["$","em",null,{"children":"Circulation"}]," (",2023,")",["."," ",["$","span",null,{"className":"font-mono text-xs","children":["doi:","10.1161/CIRCULATIONAHA.122.061025"]}]]]}]}],["$","li","fehrer2024",{"className":"text-sm text-muted-foreground","children":["$","a",null,{"href":"https://www.medrxiv.org/content/10.1101/2024.11.11.24317084v1","target":"_blank","rel":"noopener noreferrer","className":"text-[#e64a19] hover:text-[#ff9800] hover:underline","children":["Fehrer C, et al."," ","Vaccine-derived spike protein and mRNA persist for up to 6 months in blood and tissues of patients with post-acute sequelae following COVID-19 vaccination",". ",["$","em",null,{"children":"medRxiv (preprint)"}]," (",2024,")",["."," ",["$","span",null,{"className":"font-mono text-xs","children":["doi:","10.1101/2024.11.11.24317084"]}]]]}]}],["$","li","yonker2023",{"className":"text-sm text-muted-foreground","children":["$","a",null,{"href":"https://www.ahajournals.org/doi/10.1161/CIRCULATIONAHA.122.061730","target":"_blank","rel":"noopener noreferrer","className":"text-[#e64a19] hover:text-[#ff9800] hover:underline","children":["Yonker LM, et al."," ","Circulating spike protein detected in post–COVID-19 mRNA vaccine myocarditis",". ",["$","em",null,{"children":"Circulation"}]," (",2023,")",["."," ",["$","span",null,{"className":"font-mono text-xs","children":["doi:","10.1161/CIRCULATIONAHA.122.061730"]}]]]}]}]]}]]}]]}]
8:["$","section",null,{"className":"mt-8 rounded-xl border border-border bg-muted/10 p-6","children":[["$","h2",null,{"className":"text-lg font-semibold text-foreground","children":"Key takeaway"}],["$","p",null,{"className":"mt-2 text-sm leading-relaxed text-muted-foreground","children":"The relationship between spike persistence and symptoms remains contested. Some symptomatic cohorts show higher detection rates, but population-level studies often fail to replicate a strong correlation. Causality has not been established in any prospective trial."}]]}]
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