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[Surveillance of icterohemorrhagic leptospirosis in France (1974-1983)]
Abstract:
In France, between 1974 and 1983, 1 194 diagnoses of L. icterohaemorrhagiae leptospirosis were confirmed serologically at Pasteur Institute (Paris), WHO Reference Center. The number of cases diagnosed each year rose from 74 in 1974 to 277 in 1983. The annual incidence in 1983 was 0.55 per 100 000. The temporal distribution shows that 25% of cases were in August and 63% between July and October. Two areas have a greater incidence: the South West and the East. The departments near the sea of the South East, the North and the West have the lowest incidence.
Insights
Leptospirosis cases in France increased significantly between 1974 and 1983. This bacterial infection, Leptospira icterohaemorrhagiae, peaked in summer months, particularly July to October.
Area of Science:
- Epidemiology
- Infectious Diseases
- Bacteriology
Context:
- Leptospirosis is a zoonotic disease caused by pathogenic Leptospira bacteria.
- France reported a notable increase in confirmed cases of Leptospira icterohaemorrhagiae between 1974 and 1983.
- The Pasteur Institute in Paris, a WHO Reference Center, served as the primary diagnostic hub.
Purpose:
- To analyze the temporal and geographical distribution of Leptospira icterohaemorrhagiae infections in France.
- To track the incidence of leptospirosis over a ten-year period.
Summary:
- A total of 1,194 cases of Leptospira icterohaemorrhagiae leptospirosis were serologically confirmed in France from 1974 to 1983.
- Annual diagnoses rose from 74 in 1974 to 277 in 1983, with an incidence of 0.55 per 100,000 in 1983.
- Peak incidence occurred between July and October (63% of cases), with a notable concentration in the South West and Eastern regions.
Impact:
- Identified key periods (summer months) and geographical areas (South West and East) for increased leptospirosis risk in France.
- Provides crucial data for public health interventions and disease surveillance strategies.
- Highlights the importance of regional and seasonal monitoring for Leptospira icterohaemorrhagiae.