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Hidden Ebola Virus Sparks Relapse Fears
18 Jun
Summary
- Ebola can lie dormant in recovered patients' nervous systems.
- The virus hides in brain tissue, evading immune detection.
- Defective viral genomes suggest long-lasting, mutated forms persist.
A concerning discovery reveals that the Ebola virus can persist undetected within the nervous system of individuals who have recovered from infection. This hidden reservoir poses a risk for future relapses and new outbreaks, potentially occurring months or even years after initial recovery.
Recent studies utilizing lab-grown mini-brains have demonstrated the virus's ability to shield itself within cerebral tissue, bypassing the body's immune surveillance mechanisms. Researchers found that Ebola can infect key brain immune cells, and molecules meant to fight the virus were ineffective in clearing it from these models.
Further analysis uncovered defective viral genomes in persistent infections, indicating the virus may survive in a mutated, weakened, yet long-lasting form. This persistence mechanism, where the virus evades complete elimination by current treatments, is a key focus for ongoing research to understand its long-term interactions with the human host.
