Ebola Symptoms in Current Outbreak May Be Milder Than in Previous Ones
That is good news for patients, but officials fear it will make controlling the spread of the disease harder.
By Apoorva Mandavilli
June 23, 2026, 11:31 a.m. ET
...
There is too little data yet to be certain, but an assessment by the ministry of health in Congo suggests that about 90 percent of patients do not seem to develop the extensive internal and external bleeding that can arise in the disease’s horrific end stages, according to Dr. Marie-Roseline Belizaire, who leads the World Health Organization’s response to the outbreak. Some early data also suggests that fewer people may be dying this time compared with previous outbreaks.
Milder symptoms, and perhaps a lower chance of death, are undoubtedly good news for the patients. But they could paradoxically make it harder to control spread and end the outbreak.
“That’s really what I’m a bit anxious about, that this might be an indicator for an outbreak that lasts a lot longer,” said Dr. Chikwe Ihekweazu, the executive director of the W.H.O. Health Emergencies Program.
...
In the case of Zaire Ebola, which killed more than 11,000 people in a 2014 outbreak in West Africa, about half of people developed the dramatic bleeding symptoms. If only about 10 percent of patients with Bundibugyo reach that stage, many who become ill might continue to interact with others and spread the virus without seeking care.
“It makes total sense to me now how this was missed for months,” said Dr. Nahid Bhadelia, the director of Boston University’s Center on Emerging Infectious Diseases.
Dr. Bhadelia and her colleagues have found four unresolved clusters — including one in Burundi and one in South Sudan — of viral hemorrhagic fever that they suggest may be part of the outbreak. If they are, the virus may have spread far more widely and for longer than previously thought.
...
See also post #61
That is good news for patients, but officials fear it will make controlling the spread of the disease harder.
By Apoorva Mandavilli
June 23, 2026, 11:31 a.m. ET
...
There is too little data yet to be certain, but an assessment by the ministry of health in Congo suggests that about 90 percent of patients do not seem to develop the extensive internal and external bleeding that can arise in the disease’s horrific end stages, according to Dr. Marie-Roseline Belizaire, who leads the World Health Organization’s response to the outbreak. Some early data also suggests that fewer people may be dying this time compared with previous outbreaks.
Milder symptoms, and perhaps a lower chance of death, are undoubtedly good news for the patients. But they could paradoxically make it harder to control spread and end the outbreak.
“That’s really what I’m a bit anxious about, that this might be an indicator for an outbreak that lasts a lot longer,” said Dr. Chikwe Ihekweazu, the executive director of the W.H.O. Health Emergencies Program.
...
In the case of Zaire Ebola, which killed more than 11,000 people in a 2014 outbreak in West Africa, about half of people developed the dramatic bleeding symptoms. If only about 10 percent of patients with Bundibugyo reach that stage, many who become ill might continue to interact with others and spread the virus without seeking care.
“It makes total sense to me now how this was missed for months,” said Dr. Nahid Bhadelia, the director of Boston University’s Center on Emerging Infectious Diseases.
Dr. Bhadelia and her colleagues have found four unresolved clusters — including one in Burundi and one in South Sudan — of viral hemorrhagic fever that they suggest may be part of the outbreak. If they are, the virus may have spread far more widely and for longer than previously thought.
...
See also post #61
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