Ethiopia ends first Marburg outbreak after 42-day countdown; officials urge vigilance for future flare-ups

A major containment milestone for a deadly hemorrhagic fever

Ethiopia has announced that its first-ever Marburg virus outbreak has ended after completing the World Health Organization’s required 42-day monitoring period with no new confirmed cases. Public health officials said the milestone reflects intensive surveillance and response work across affected areas after the virus was confirmed in November 2025.

The outbreak involved 14 confirmed infections, including nine deaths and five recoveries, with additional deaths categorized as possible cases. Officials also reported that health workers were among those infected, highlighting the importance of rapid triage systems, protective equipment, and safe clinical care practices when hemorrhagic fever is suspected.

Why the 42-day rule matters, and what comes next

The 42-day threshold is used because it spans two full incubation cycles, helping confirm that hidden transmission chains have been interrupted. WHO said it supported Ethiopia’s response with technical guidance and operational backing, including work on surveillance, laboratory testing, case management, infection prevention and control, logistics, and community engagement.

Marburg can spread through close contact with bodily fluids or contaminated materials and is linked to fruit bats. Because there is no widely licensed vaccine or specific treatment, containment depends on early detection, isolation, safe burials, and strict infection control in healthcare settings. Even after an outbreak is declared over, health agencies typically continue enhanced monitoring and readiness planning to reduce the risk of reintroduction or delayed detection.

• Ethiopia declared the outbreak over after 42 days with no new confirmed cases.
• Marburg is a severe viral hemorrhagic fever with bat origins and person-to-person spread via bodily fluids.
• Ongoing surveillance and infection control remain central because there is no widely licensed vaccine or cure.