Surveillance of Lassa fever
Learn how Lassa fever is monitored.
On this page
- Number of cases of Lassa fever in Canada
- Number of cases of Lassa fever around the world
- How Canada monitors Lassa fever
Number of cases of Lassa fever in Canada
No cases of Lassa fever have been reported in Canada.
Number of cases of Lassa fever around the world
Lassa fever was first identified in 1969 in Lassa, Nigeria. In some areas of West Africa, the disease is endemic, which means it is constantly present.
The number of people infected with Lassa virus is estimated at between 100,000 and 500,000 each year. There are approximately 5,000 deaths annually.
The majority of cases have been confirmed in:
- Sierra Leone
Cases have also appeared in:
- Cote d’Ivoire
- Burkina Faso
Some cases have been imported to other countries, such as the United Kingdom and, more recently, the U.S.
How Canada monitors Lassa fever
All suspected or probable cases of Lassa fever must be immediately reported. Reports can be made through the 24-hour emergency line at 1-866-262-8433.
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