Viral Persistence in Long COVID and ME/CFS: What the Emerging Research Shows
Amy Proal, PhD, President and Research Director of the PolyBio Research Foundation, researches whether SARS-CoV-2 and other viruses can persist in body tissue reservoirs after the acute infection clears, potentially driving ongoing immune activation in Long COVID and ME/CFS. This is an active, early research area, not an established treatment target: therapeutics tied to this theory (for example, the PolyBio-funded lumbrokinase trial) are experimental and in-trial, never a self-directed recommendation. Do not self-start any treatment based on this theory.
Viral fragments or reservoirs may persist in tissue after acute infection and could drive ongoing immune activation n/a, education only
This is the mechanistic hypothesis Proal's research group is actively investigating.
Do not self-start antivirals, lumbrokinase, or any other agent based on this theory n/a
Any therapeutic tied to viral-persistence theory is currently experimental and in-trial. Some, like lumbrokinase, carry real bleeding-risk considerations that make self-starting them unsafe.
If you are interested in trial participation or want to discuss the theory with your care team, that conversation belongs with a clinician or a clinical trial coordinator n/a
Trial enrollment and any experimental treatment decision needs clinical oversight, not self-direction.
The biological plausibility Proal and colleagues describe rests on findings of viral RNA or protein fragments in tissue samples months after acute infection, and on immune-activation markers that persist alongside symptoms.
View sources
PolyBio Research Foundation
Pathogens, Long COVID and Chronic Fatigue Syndrome: Proal and Heinrich
Not medical advice. This page is for education only and is not a substitute for professional medical care. Consult a qualified clinician before changing your health routine.
Independent curation. YourProtocol is an independent platform. This protocol is based on the publicly available work of Amy Proal, PhD and is not created, reviewed, endorsed by, or affiliated with Amy Proal, PhD or PolyBio Research Foundation.
Is this for you
- Readers curious about the biological research behind Long COVID and ME/CFS
- Anyone considering trial participation who wants the honest research-status framing first
Cautions
- Active, early research, not an established treatment target
- Never self-start any therapeutic tied to this theory; some carry real risks
- Informational only, not medical advice