Viral persistence in long COVID is still a subject of ongoing research and there is currently no definitive evidence of active viral replication.
Circumstantial evidence, such as the presence of viral debris in tissues and fluids, suggests the possibility of viral persistence in some individuals.
The immune system plays a key role in the body's response to viral persistence, with symptoms being caused by the immune system's reaction rather than active viral replication.
The presence of persistent virus does not necessarily mean that individuals will experience long-term symptoms, as some people may not react to the virus.
Developing therapeutics for long COVID involves finding ways to calm the body's immune response to the virus, rather than eliminating the virus itself.