Lassa fever is an acute viral illness, transmitted to humans by rodents. It occurs in West Africa. No cases of Lassa fever were reported in the EU/EEA in the recent years, according to the latest data in the Annual Epidemiological Report. Primary transmission can be prevented by avoiding contact with rodents, especially in regions where outbreaks occur.Read the Annual Epidemiological Report
Threats and outbreaks
ECDC risk assessments, epidemiological updates, weekly threat reports related to cases and outbreaks of Lassa fever worldwide.
Surveillance and disease data
No cases of Lassa fever or other arenaviruses responsible for viral haemorrhagic fevers were reported in the EU/EEA.