HMN 2026: How Seven years after Ebola, survivors still live with neurological scars left by the disease

Ebola virus disease is caused by infection with an orthobolavirus found primarily in sub-Saharan Africa and can be fatal in 50% of those infected, on average. Among those who survive the disease, it leaves behind its imprint on the brain even after recovery.

A recent study published in JAMA Neurology conducted in Liberia involving Ebola survivors found that shortly after recovering from the virus, they faced a wide range of neurological issues, including persistent headaches, extreme fatigue, tremors and even mental health troubles. Although most symptoms improved over time, some effects lingered.

Seven years later, survivors were still more likely to experience memory loss, irritability and difficulty concentrating than people who never had the disease.

Lingering remnants of disease

The 2014 West African Ebola outbreak was the largest in history, causing more than 28,000 cases and more than 11,000 deaths. It revealed neurological symptoms and long-term effects in Ebola survivors that had previously been reported only few and far between. For instance, a small 2007 study in Uganda found that survivors often had headaches and problems with memory and concentration months later.

After the 2014 outbreak, researchers and doctors increasingly recognized headaches, memory problems and mood changes among survivors, but organized investigations into the disease’s neurological impact remained limited.

To find out what Ebola leaves behind long after the infection is gone, researchers tracked 229 people in Liberia from 2015 to 2023, including 148 survivors and 81 close contacts who never contracted the virus.

The study followed both groups for years, with neurologists meeting participants every six months to ask about symptoms during their illness and any health problems that persisted afterward. They also carried out physical examinations, testing coordination, reflexes, strength and other signs of nervous system function.

During their initial illness and shortly after recovery, Ebola survivors commonly experienced neurological problems, including persistent headaches, depression, severe fatigue, tremors and memory difficulties. Most of these symptoms improved over the seven years the researchers followed participants.

After more than half a decade, survivors were still more likely to struggle with memory loss, irritability and trouble concentrating.

The study also found that long-term neurological outcomes were linked to the severity of the initial infection. Survivors with more severe disease tended to have poorer neurological outcomes years later.

The team also found that higher Ebola antibody levels in survivors were linked to more neurological symptoms and poorer neurological function, suggesting that an overactive or persistent immune response, rather than the virus itself, may be driving these long-term effects.

The results led researchers to conclude that Ebola is a neurotropic disease, capable of directly affecting the nervous system and potentially persisting long after the acute infection has resolved.

The study makes clear that health systems in Ebola-affected countries need to look beyond short-term care and plan for long-term neurological and mental health follow-up for survivors. The researchers emphasize the need for more neurological training and specialist expertise to support Ebola survivors.

Simple screening for headaches, memory problems or mood changes, integrated into routine checkups, could go a long way toward supporting survivors’ recovery and quality of life.

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