Epidemiology of heartwater in Guadeloupe and in the Caribbean
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Date
Authors
Heartwater : Past, Present and Future. Workshop (1986 : Kruger National Park, South Africa)
Camus, E.
Barre, N.
Journal Title
Journal ISSN
Volume Title
Publisher
Pretoria : Government Printer
Abstract
At present, heartwater in the Caribbean is known with certainty only on Guadeloupe, Marie Galante and Antigua; the first 2 islands are widely infected.
The most important factors responsible for particular aspects of heartwater in Guadeloupe are:
• Cowdria ruminantium of high virulence.
• A very resistant cattle population (Creole), not normally clinically affected.
• A fairly susceptible goat population (Creole) (22% goats born in endemic areas die after experimental inoculation) which, fortunately, includes breeding lines with inherited resistance characteristics.
• Amblyomma variegatum which is present all over the island and all through the year, but with a low infection rate (1-2 % of adult ticks are infected) because of the short period of rickettsemia in infected animals. The low rate of tick infection results in a low endemicity of the disease.
For goats, the epidemiologic situation can be regarded as unstable because the low rate of infection in ticks does not allow a natural immunization of the majority of young kids when they still have a non-specific resistance.
The possible evolution of heartwater in the Caribbean and in the United States is considered.
Description
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Keywords
Veterinary medicine
Sustainable Development Goals
Citation
Camus, E & Barre, N 1987, 'Epidemiology of heartwater in Guadeloupe and in the Caribbean’, Onderstepoort Journal of Veterinary Research, vol. 54, no. 3, pp. 419-426.