Bovine brucellosis trends in Malaysia between 2000 and 2008Report as inadecuate

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BMC Veterinary Research

, 9:230

Epidemiology, public health and modelling


BackgroundBovine brucellosis is an important disease affecting cattle characterised by abortion, still birth, reduced milk production, weak foetus and infertility in both males and females. There is wide distribution of the disease among cattle and several wildlife species. Bovine brucellosis is commonly caused by B. abortus and very occasionally B. melitensis and B. suis. The distribution of bovine brucellosis in cattle has not been described in Malaysia. In this paper we describe the distribution, pattern and trend of bovine brucellosis in Peninsular Malaysia between 2000 and 2008 based on serological data obtained from nationwide B. abortus serosurveillance activities in cattle populations.

ResultsBrucella antibodies were detected in 21.8% of sampled herds 95% CI, 21.01–22.59 and 2.5% 95% CI; 2.45–2.55 of sampled cattle. The state of Pahang had the highest animal and herd-level seroprevalence of 5.3 and 43.6%, respectively. The herd-level seroprevalence varied but remained high 18-26% over the period of study and generally increased from 2000 to 2008. Seropositive herds clustered around the central part of the peninsula within the period of the study. The months of September, October and November illustrated the highest rates with corresponding seroprevalences of 33.2, 38.4 and 33.9%, respectively. A noticeable variation was observed in the cattle-level seroprevalence, but the rate remained relatively low <5%. The chi-square statistics showed herd size χ2 = 1206.077, df = 2, p = 0.001, breed χ2 = 37.429, df = 1, p = 0.001, month of sampling χ2 = 51.596, df = 11 p = 0.001, year χ2 = 40.08, df = 8, p = 0.001 and state χ2 = 541.038, df = 10, p = 0.001 to be associated with increased seropositivity.

ConclusionBovine brucellosis is widespread among herds in Peninsular Malaysia at a low within-herd seroprevalence rate.

KeywordsEpidemiology Bovine brucellosis Distribution Trend Pattern AbbreviationsHPAIHighly pathogenic avian influenza

FMDFoot and mouth disease

LIDLocal Indian dairy

RBPTRose bengal plate test

CFTCompliment fixation test

OIEWorld Organization for Animal Health

VRIVeterinary research institute

DVSDepartment of Veterinary Service

JUPEMDepartment of Survey and Mapping

CIConfidence interval

dfDegree of freedom

SdStandard deviation

MTMMalaysia Thailand Myanmar.

Electronic supplementary materialThe online version of this article doi:10.1186-1746-6148-9-230 contains supplementary material, which is available to authorized users.

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Author: Mukhtar S Anka - Latiffah Hassan - Azri Adzhar - Siti Khairani-Bejo - Ramlan Bin Mohamad - Mohamed A Zainal


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