In severe cases, people with Ebola may experience internal and external bleeding, organ failure and dangerously low blood pressure. Without prompt care, the disease can quickly become life-threatening.

The virus targets immune cells and spreads through the bloodstream. It triggers widespread inflammation and makes it harder for the body to manage fluids. Outcomes vary, but early treatment can make a critical difference.

“Although the recent outbreaks involving the Bundibugyo virus species of Ebola in the Democratic Republic of the Congo and Uganda are in the news, the risk in the United States is very low,” says Maureen K. Bolon, MD, MS, a hospital epidemiologist at Northwestern Memorial Hospital. “The focus right now is on supporting international efforts to identify and treat cases in Africa.”

Ebola is believed to originate in animals, most likely bats. It can spread to humans through contact with infected wildlife or their bodily fluids. Outbreaks often start in rural areas of affected countries and can grow quickly without early detection and intervention.

How Ebola Spreads

Ebola spreads through direct contact with body fluids from someone who is infected. This includes blood, vomit, urine, stool, saliva, semen and even breast milk. It can also spread through contaminated objects, like needles or medical equipment.

People at highest risk include caregivers, family members and healthcare workers treating patients with Ebola. Traditional burial practices that involve touching the body can also increase risk.

It’s also important to understand how Ebola does not spread:

• Ebola is not spread through the air, so it cannot be transmitted by simply being near someone who is infected.
• It does not spread through casual contact, such as sitting next to someone.
• It does not spread through properly handled and prepared food.

Knowing these facts can help reduce unnecessary fear.

“We are all familiar with the dramatic images of workers in Ebola outbreaks wearing full-body suits,” says Dr. Bolon. “It’s important to know that these suits are intended to prevent exposure to body fluids. There is actually no risk of the virus spreading through the air.”

Symptoms and Timeline

Symptoms of Ebola disease typically begin between two and 21 days after exposure. Most people develop symptoms within eight to 10 days.

Early symptoms can feel like the flu and may include:

• Fever
• Fatigue
• Headache
• Muscle pain

As the illness progresses, symptoms may become more severe and can include:

• Vomiting and diarrhea
• Rash
• Abdominal pain
• Liver and kidney problems

In serious cases, bleeding and organ failure can occur.

If you think you may have been exposed to Ebola, seek medical care right away — especially if you have recently traveled to affected countries or had contact with someone who is infected.

Early treatment helps improve outcomes and limit the spread of the disease.

Diagnosis and Treatment

Diagnosing Ebola early can be difficult because symptoms often resemble other illnesses, like malaria or the flu. Doctors rely on travel history, exposure risk and lab tests to confirm infection.

Supportive care plays a critical role. This may include:

• IV fluids
• Maintaining blood pressure
• Balancing electrolytes
• Oxygen support

Doctors also treat complications and monitor organ function. Advances in supportive care have improved survival rates compared to earlier outbreaks.

Prevention and Vaccination

Preventing Ebola starts with avoiding contact with body fluids from infected individuals and following strict hygiene practices.

In outbreak areas, this may include:

• Avoiding contact with wildlife
• Practicing safe burial procedures
• Following public health guidance

A vaccine is available for Zaire ebolavirus, which is the species responsible for many major outbreaks. In previous outbreaks, the Zaire Ebola vaccine was used widely and improved the outbreak response. “Unfortunately, there is not yet a vaccine for Bundibugyo ebolavirus,” adds Dr. Bolon. “It is hoped that ongoing research efforts will lead to rapid vaccine development.”

Medical teams caring for people with Ebola use specialized protective equipment, including gowns, gloves, masks and face shields. These precautions are essential to prevent the virus from spreading in clinical settings.

Managing an Ebola Outbreak

Stopping an Ebola outbreak requires fast action. Public health teams work to identify cases, isolate patients and trace people who may have been exposed to the virus.

Health workers typically monitor anyone exposed to Ebola for 21 days to check for symptoms.

Outbreaks in the Democratic Republic of the Congo and other affected countries highlight both ongoing risks and meaningful progress. While outbreaks can still occur, advances in surveillance, rapid response, vaccination efforts and supportive care have helped reduce the number of cases and deaths.

Response efforts typically include:

• Community education
• Vaccination campaigns
• Safe burial practices
• Protecting frontline healthcare workers

What Travelers and the Public Should Know

For most people, the risk of Ebola is very low. Cases are usually limited to specific regions, and global healthcare systems closely track outbreaks.

Travelers to affected countries should stay informed, follow official public health guidance, avoid contact with infected individuals and practice good hygiene.

For everyone else, it helps to know the basics: Ebola is not easily spread since it requires close, direct contact, and it is not spread through the air. Modern healthcare systems are prepared to safely manage isolated cases if they occur.

Key Points To Remember

Ebola disease is a serious global health concern. At the same time, treatment has improved with ongoing education, preparedness and strong healthcare systems, and the risk to the general public remains low.

“Outbreaks like the Bundibugyo ebolavirus show how vulnerable humans remain to infectious diseases,” says Dr. Bolon. “At the same time, they illustrate the compassion and heroism of healthcare workers and the crucial role of public health.”