International Context: In May 2026, Ebola drew renewed attention from the global health community following concerning epidemiological signals reported across Central and East Africa.
The World Health Organization (WHO) announced outbreaks of Ebola caused by the Bundibugyo virus in the Democratic Republic of the Congo and Uganda, declaring the situation a Public Health Emergency of International Concern (PHEIC). WHO emphasized key prevention pillars including early detection, contact tracing and monitoring, infection prevention and control (IPC) in healthcare settings, case management, and risk communication.
The U.S. Centers for Disease Control and Prevention (CDC) also issued a Health Alert Network (HAN) notice regarding the outbreaks in the DRC and Uganda, advising healthcare and public health systems to strengthen: identification of suspected cases based on epidemiological exposure within 21 days, isolation procedures, infection control measures, and monitoring of travelers arriving from affected areas.
The CDC continues to maintain a “Current Situation” update page providing ongoing developments and recommendations related to healthcare preparedness and international travel.
Situation in Vietnam: Vietnam has not reported any Ebola cases to date. However, health authorities are calling for enhanced preparedness to enable early detection of potential imported cases, particularly among individuals entering or traveling from affected regions within the previous 21 days.
Ebola Virus Disease (EVD) is an acute infectious disease caused by viruses belonging to the Filoviridae family. Several Ebola virus species exist, and outbreaks may differ in severity, epidemiological context, and public health response requirements. Recent international updates from WHO and CDC identified the Bundibugyo virus as the causative agent in the outbreaks linked to the DRC and Uganda (May 2026).
Transmission and Sources of Infection: Fruit bats are suspected to be the natural reservoir of the virus. Animal-to-human transmission may occur through contact with infected animals or contaminated animal tissues.
Human-to-human transmission occurs primarily through:
- Direct contact with blood or bodily fluids (vomit, diarrhea, saliva, urine, etc.)
- Contact with contaminated surfaces or objects such as needles, medical equipment, clothing, or bedding
- High-risk exposure during healthcare delivery without adequate personal protective equipment (PPE)
- Funeral or burial practices involving direct contact with the body
Incubation period: typically 2–21 days.
Early symptoms:
- Fever
- Fatigue
- Headache and muscle pain
- Sore throat
Progressive symptoms:
- Vomiting
- Diarrhea
- Abdominal pain
- Rash
- Possible coagulation abnormalities
Severe disease:
- Shock
- Multi-organ failure
- Hemorrhage may occur, though not in all cases
Suggested criteria for suspicion and activation of screening/isolation procedures at frontline healthcare facilities: Acute febrile illness or infectious symptoms combined with epidemiological risk factors within the previous 21 days (travel to/through outbreak areas, contact with suspected or confirmed cases, or exposure to bodily fluids).
Diagnosis: Definitive diagnosis is typically based on RT-PCR testing, depending on disease stage and laboratory capacity.
Treatment
Primarily focuses on intensive supportive care, including:
- Fluid and electrolyte replacement
- Shock management
- Respiratory support
- Correction of coagulation disorders
- Infection control and supportive interventions
In certain cases, strain-specific therapeutics or monoclonal antibody treatments may be considered, based on physician assessment, professional guidelines, and available resources.
Practical Recommendations
For the community:
- Wash hands frequently
- Avoid direct contact with blood or bodily fluids
- If symptoms develop within 21 days after travel to affected regions: wear a mask, limit contact with others, seek medical attention, and provide full travel and exposure history
For healthcare facilities:
- Strengthen epidemiological screening at triage and emergency departments
- Implement early isolation and infection prevention measures
- Use PPE according to risk assessment
- Follow safe specimen collection procedures
- Promote accurate risk communication and prevent misinformation
Key Public Health Message: Ebola is a serious disease, but it does not spread through the air over long distances like influenza. The primary risk comes from direct contact with infected blood or bodily fluids. Therefore, border health surveillance, epidemiological screening, and infection control remain the core preventive measures.