Travel health alerts
Disease outbreak alerts for Sierra Leone
1 outbreak reported for Sierra Leone
Last checked against TravelHealthPro on 2026-10-18.
Lassa fever
Reported 15 September 2026Reduce your risk while travelling
The World Health Organisation reported that on 3 March 2026, a 36-year-old pregnant woman died in Bonthe District, Sierra Leone, after testing positive for Lassa fever. The last Lassa fever outbreak in Sierra Leone was reported in February 2025.
No vaccine — how to stay safe
Avoid rodents and store food securely; keep away from anyone who is seriously unwell.
Travelling to Sierra Leone?
Our travel health team will confirm exactly which vaccines and precautions are right for your trip in one short consultation.
Contains public sector information from TravelHealthPro (NaTHNaC), licensed under the Open Government Licence v3.0. © UK Health Security Agency. Open Government Licence v3.0. This page is general guidance, not medical advice — confirm what you need for your trip with our travel health team.