Ebola Virus Persistence Beyond Acute Infection: Could HIV-Associated Immune Dysfunction Influence Survivor Biology?

Area of Science:

• Virology
• Immunology
• Public Health

Background:

• Ebola virus disease (EVD) was historically viewed as acute, but persistence in immune-privileged sites is now recognized.
• Persistent Ebola virus reservoirs are linked to prolonged shedding, sexual transmission, and potential resurgence.
• EVD survivors often show chronic inflammation and immune dysfunction, potentially affecting viral clearance.

Purpose of the Study:

• To review evidence on Ebola virus persistence, immune reservoirs, and survivor immune dysfunction.
• To explore the potential biological plausibility of HIV-associated immune dysregulation influencing Ebola persistence.
• To highlight implications for survivor care, outbreak preparedness, and future research.

Main Methods:

• This is a narrative review examining existing scientific literature.
• It synthesizes data on Ebola virus persistence and immune responses in survivors.
• It discusses theoretical interactions between HIV and Ebola persistence.

Main Results:

• Ebola virus can persist in immune-privileged sites (genital tract, CNS, eyes, breast milk) post-recovery.
• Persistent reservoirs correlate with transmission and potential disease recrudescence.
• EVD survivors exhibit long-term immune alterations, including chronic inflammation and T-cell dysfunction.

Conclusions:

• Ebola virus persistence is an established post-acute phenomenon with significant public health implications.
• HIV-associated immune dysregulation in people living with HIV (PWH) is a biologically plausible, though untested, factor that could influence Ebola clearance and reservoir dynamics.
• Further research is needed to understand the interplay between HIV and Ebola persistence for improved patient management and epidemic control.