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Surveillance of climate-sensitive zoonotic diseases: Leptospirosis at livestock slaughterhouses in three regions of Uganda
1. German Federal Institute for Risk Assessment
bfr@bfr.bund.de | bfr.bund.de/en
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Surveillance of climate-sensitive zoonotic diseases: Leptospirosis at livestock
slaughterhouses in three regions of Uganda
Lordrick Alinaitwe1,2,3, Martin Wainaina4, Kristina Roesel1, Clovice Kankya3, Salome Dürr2, Martin Richter4, Elizabeth Cook1,
Anne Mayer-Scholl4
1 International Livestock Research Institute (ILRI), Animal and Human Health Program, Kenya
2 University of Bern, Veterinary Public Health Institute, Switzerland
3 Makerere University, College of Veterinary Medicine, Animal Resources and Biosecurity, Uganda
4 German Federal Institute for Risk Assessment, Department of Biological Safety, Germany
Leptospirosis is an important bacterial zoonosis worldwide and is disproportionately associated with low-income settings and with
extreme weather events due to climate change. Transmission to humans often occurs when infected rodents and domestic animals
contaminate the environment via urine as the bacteria preferentially colonise kidneys. Leptospirosis causes significant morbidity
and loss of productivity in humans and animals, and inadequate control measures are in place in Uganda. Surveillance of
leptospirosis at slaughterhouses can therefore be useful in providing information on vast areas of a country and screening for
diseases that are not considered during animal inspections.
Laboratory testing
PCR testing – pathogenic
leptospires, single- and
multi-locus sequence typing.
Sanger sequencing
Species identification.
Determining sequence types.
Data analyses:
Prevalence by PCR.
Phylogenetic relatedness.
Slaughterhouse sampling
Slaughterhouses from northern,
eastern and central regions.
2,030 livestock (820 cattle, 761
pigs, 335 goats, 114 sheep), and
117 small mammals.
Kidney samples obtained.
Methods Preliminary Results
Study sites in Uganda
Contact:
Martin Wainaina .Tel. +49-30-18412-24332 .
Email: Martin-Wainaina.Kimari@bfr.bund.de
Conclusion
Slaughterhouse data are important and cost effective in surveillance of
zoonotic diseases in Uganda. This approach can be scaled-up to include
other animal diseases of public health or veterinary importance.
Phylogeny from multi-locus
sequence typing (MLST)
Diverse sequence types observed.
Pathogenic leptospires
from PCR testing
Detected in various hosts.
High prevalence observed.
Lira
Soroti
Mbale
Kampala
N