A twelve-year study of leptospirosis on Barbados.
Between November 1979 and December 1991,398 cases of severe leptospirosis were confirmed on Barbados (range for 1980-1991 23-56 ; mean 32.7 ; incidence 13.3/100,000/year).
For the six-year periods 1980-1985 and 1986-1991 there was no significant change in incidence with time.
Incidence is unlikely to change significantly in the next decade.
Monthly average case numbers ranged from 1.4 (July) to 4.3 (November).
The average (2.8) for June to December (the 7 wetter months) was not significantly higher than that (2.5) for January to May (the 5 drier months).
The age range was 7-86.
There were three times as many male cases (302) as female (96), and nearly 10 times as many in those<35.
Although the highest number of cases (69) was in males aged 15-24, the highest incidence was in the older age groups, particularly the male 65-74 year-olds, and the female 55-64 year-olds.
Leptospirosis was the proven cause of death in 55 (13.8%) hospital patients (annual range 0-13, mean 4.5).
Some of a further 39 fatalities might have been cases.
Death from leptospirosis was nearly twice as common among the women as among the men.
Only one patient under 20 years of age died.
Leptospira were isolated and identified from 117 (29.4%) of the 398 sick patients.
The infecting organisms were bim (serogroup Autumnalis - 75), copenhageni (Icterohaemorrhagiae - 26), arborea (Ballum - 14) and bajan (Australis - 2).
Mots-clés Pascal : Leptospirose, Spirochétose, Bactériose, Infection, Epidémiologie, Homme, Barbade, Antilles, Amérique Centrale, Amérique, Incidence, Age, Sexe
Mots-clés Pascal anglais : Leptospirosis, Spirachaetosis, Bacteriosis, Infection, Epidemiology, Human, Barbados, West Indies, Central America, America, Incidence, Age, Sex
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 95-0477205
Code Inist : 002B05B02L9. Création : 01/03/1996.