Leptospirosis in Kolenchery, Kerala, India : Epidemiology, prevalent local serogroups and servoars and a new serovar.
Leptospirosis is the most widespread zoonosis in the world.
It is mostly an occupational disease especially in rural areas.
Kolenchery is in the midlands of Kerala.
The landscape consists of marshy land and dry land interspersed by rivulets and ponds.
Irrigation of dry lands for cultivation during the summer months started in mid 1980s after the irrigation projects were commissioned.
Cases of leptospirosis were rarely diagnosed in Kolenchery before 1987.
Since then a yearly increase in incidence is observed.
No major study on either epidemiology or clinical picture has been done on human leptospirosis in Kerala so far.
The aim of this study was to define the major clinical presentations, epidemiology of the infection and demonstrate the predominant serogroups and serovars causing the illness in this limited geographical area.
The study involves 976 cases of leptospirosis confirmed by culture and/or serological tests.
Serogroups Autumnalis, Australis and Icterohaemorrhagiae were the commonest.
Mortality rate was 5.32%. The increase in incidence is probably due to the geographical characteristics, continuous moisture of the soil due to irrigation in summer and year-round cultivation making food and cover available to host rodents.
Close interaction of humans, animals, soil and water in this region make the spread of leptospirosis to humans easy. (...)
Mots-clés Pascal : Leptospirose, Spirochétose, Bactériose, Infection, Sérogroupe, Variation géographique, Activité professionnelle, Technique ELISA, Epidémiologie, Incidence, Mortalité, Homme, Age, Inde, Asie
Mots-clés Pascal anglais : Leptospirosis, Spirachaetosis, Bacteriosis, Infection, Serogroup, Geographical variation, Professional activity, ELISA assay, Epidemiology, Incidence, Mortality, Human, Age, India, Asia
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 97-0488986
Code Inist : 002B05B02P. Création : 03/02/1998.