Ebola & Hantavirus 2026:
Should You Be Worried?

Two infectious disease stories are circulating in the news simultaneously — and they could not be more different in scale, geography, and transmission dynamics. One is an active outbreak in Central Africa that has already surpassed 1,000 cases and been declared a global health emergency. The other is a contained cluster aboard a cruise ship that unfolded over six weeks and has now been fully resolved for U.S. travelers.

Neither story warrants panic for the vast majority of people reading this. Both stories are worth understanding clearly — because misinformation about infectious disease causes real harm, and because an accurate understanding of risk is the foundation of any useful public health response.

Here is what the data actually says, as of June 22, 2026.

🔴 Ebola 2026: The Bundibugyo Outbreak in DRC and Uganda

On May 15, 2026, the Ministry of Health of the Democratic Republic of the Congo confirmed a new Ebola outbreak in Ituri Province in northeastern DRC — the 17th Ebola outbreak in DRC's history. The causative agent was identified as Bundibugyo virus, one of four orthoebolaviruses known to cause disease in humans.

What Is Bundibugyo Virus?

Bundibugyo virus (BVD) was first identified in 2007 during an outbreak in Uganda that resulted in 131 confirmed cases and 42 deaths. A second outbreak occurred in DRC in 2012, with 38 confirmed cases and 13 deaths. The 2026 outbreak is by far the largest in Bundibugyo's recorded history.

Crucially: there is no approved vaccine and no specific approved treatment for Bundibugyo virus disease. This distinguishes the current outbreak from the 2018–2020 DRC Ebola outbreak caused by Zaire ebolavirus, for which the rVSV-ZEBOV vaccine (Ervebo) was available and deployed. Patients with Bundibugyo virus receive supportive care only.

How Does Ebola Spread?

• Direct contact with the blood, body fluids, or secretions of a person who is sick with Ebola or has died from it
• Contact with objects (needles, bedding, clothing) contaminated with body fluids
• In some cases, contact with infected animals (bats are the likely reservoir host)
• Ebola does NOT spread through the air, water, or food
• A person is only contagious when they have symptoms — not during the incubation period

The 2026 Outbreak: Timeline and Geography

What Is the Risk for People Outside DRC and Uganda?

🟡 Hantavirus 2026: The MV Hondius Cruise Ship Outbreak — Now Resolved for the U.S.

On May 2, 2026, the WHO received notification of a cluster of severe respiratory illness aboard the MV Hondius, a Dutch-flagged expedition cruise ship traveling in the South Atlantic Ocean. The ship had departed from Ushuaia, Argentina on April 1 with 114 passengers and 61 crew from 23 countries, traveling to Antarctica and remote South Atlantic islands.

The causative agent was identified as Andes virus — a type of hantavirus found in South America and notable as the only hantavirus known to spread person-to-person, though this is rare and requires close, prolonged contact.

The U.S. Response — and How It Ended

What Is Andes Virus?

Hantaviruses are a family of more than 50 viruses carried by rodents. In the Americas, they can cause Hantavirus Pulmonary Syndrome (HPS) — a severe respiratory illness with a case fatality rate of approximately 38% among patients who develop severe symptoms. There is no approved specific treatment; early supportive care, including ECMO in severe cases, improves survival.

Andes virus is unusual among hantaviruses in that it can spread person-to-person through close contact — exposure to respiratory secretions, saliva, or body fluids of a symptomatic person. It does not spread through casual contact or airborne transmission in the way that COVID-19 or measles do.

Side by Side: Ebola vs. Hantavirus (Andes)

What Should You Actually Do?

For the overwhelming majority of people reading this — those who are not traveling to Ituri, North Kivu, or South Kivu provinces in DRC, not traveling to Uganda, and not aboard the MV Hondius — the practical answer is: nothing unusual.

• If you have no travel plans to affected areas: follow normal hygiene. Wash hands. No change in behavior required.
• If you are traveling to DRC or Uganda: check CDC Travel Health Notices before departure. Avoid the affected provinces. Follow all screening and monitoring guidance on return.
• If you are a healthcare provider: be aware of both outbreaks for travel history purposes. Any febrile illness in a patient returning from DRC or Uganda within 21 days warrants consideration of Ebola in the differential and immediate infection control measures pending evaluation.
• For hantavirus generally (not just this outbreak): avoid contact with rodents and rodent droppings. Do not stir up dust in areas where rodents may have been present. Use proper PPE when cleaning potentially contaminated spaces.
• Stay informed: CDC.gov and WHO.int provide daily updates on both outbreaks. Reliable information is the best antidote to anxiety.