Ebola Outbreak in Congo Sparks Global Concern

Health authorities recently confirmed a new outbreak of Ebola in Congo, with over 300 suspected cases and a minimum of 88 fatalities. Neighboring Uganda has also reported cases. The World Health Organization (WHO) classified this as a public health emergency of international concern.

Ebola, known for its high fatality rates, was first identified in 1976 following two outbreaks in what is now South Sudan and Congo, as noted by the WHO. Historically, major Ebola outbreaks have occurred in sub-Saharan Africa, home to the viruses responsible for the disease. West and Central Africa have seen the most severe outbreaks.

Several viruses are capable of causing Ebola, including Ebola virus, Sudan virus, and Bundibugyo virus, according to the WHO. The current Congo outbreak is linked to the Bundibugyo virus, which is relatively rare, with only two prior outbreaks on record.

Fruit bats are considered the natural reservoir for Ebola viruses. Other animals such as apes and monkeys can also be infected. Human infection occurs through contact with infected animals or through person-to-person transmission via body fluids like blood, feces, or vomit. Contaminated surfaces can also facilitate transmission.

The U.S. Centers for Disease Control and Prevention (CDC) indicates that symptoms manifest between two days and three weeks post-exposure, typically within one week. Initial symptoms resemble those of the flu, including fever, aches, fatigue, and sore throat. Progression can lead to gastrointestinal issues, rashes, seizures, and bleeding.

The average fatality rate for Ebola stands at around 50%, though rates have varied between 25% and 90% in previous outbreaks. Approved vaccines and treatments exist only for the Ebola virus.

Historical Outbreaks

The 2013-2016 outbreak in West Africa marked the worst on record, with over 28,000 cases and more than 11,000 deaths. The epidemic involved multiple countries, including Guinea, Liberia, and Sierra Leone, and extended to nations like the United States, the U.K., Italy, and Spain. It reportedly began with a child encountering infected fruit bats.

The second-largest outbreak from 2018 to 2020 took place in Congo’s North Kivu, South Kivu, and Ituri provinces, with cases in Uganda. The CDC reports over 3,400 cases and more than 2,200 deaths, displaying a fatality rate of 66%. Like the 2013-2016 outbreak, these cases involved the Ebola virus.

Congo has experienced over a dozen substantial outbreaks, including one as recently as late 2025.

In 2007, western Uganda experienced an outbreak of the Bundibugyo strain, recording 131 cases and 42 deaths according to the CDC. The fatality rate for Bundibugyo virus appears lower, yet lacks a specific treatment or vaccine.

First Known Outbreaks

The initial recognized Ebola outbreaks occurred 50 years ago in towns now part of South Sudan. Believed to have begun at a cotton factory, the condition spread to health workers from infected patients. The Sudan virus caused the outbreak, resulting in 151 deaths and 284 reported cases.

Another outbreak in northern Congo led scientists to identify the Ebola virus, originating from a remote village near the Ebola River. With 280 deaths, this outbreak had a very high fatality rate.

Ebola’s first recorded instance outside of Africa involved a British lab technician exposed to the virus via a needle prick but who later recovered.

Globally, Ebola remains relatively rare outside Africa.