Invasive Species Compendium

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Abstract

Risk of babesiosis and anaplasmosis in different ecological zones of Santa Cruz Department, Bolivia.

Abstract

A cross-sectional study of the seroprevalence of Babesia bigemina, B. bovis and Anaplasma marginale in cattle from eastern Bolivia was carried out by ELISA to identify the risk of tick-borne diseases in 3 ecological zones. 19 farms were sampled in the subtropical humid zone, 13 in the dry subtropical zone and 9 in the lower western valleys of the Andean massif. All 3 pathogens were widespread. For B. bovis, seroprevalence was high (74.8 and 77.8%, respectively) in the humid and dry subtropical zones but lower in the western valleys (22.5%). For B. bigemina, seroprevalence was lower (23.5 and 56.5%, respectively) in the 2 subtropical zones and even lower in the western valleys (12.8%). For A. marginale, seroprevalence in the 2 subtropical zones was low (18.7 and 31.9%, respectively) and very low (5.6%) in the western valleys. Data for individual farms were analysed for risk of both forms of babesiosis; this showed low risk of disease in the subtropical humid zone, higher risk in the dry subtropical zone and variable risk in the western valleys.