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Molecular detection and characterization of Rickettsia felis , R. asembonensis , and Yersinia pestis from peri-domestic fleas in Uganda
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Molecular detection and characterization of Rickettsia felis , R. asembonensis , and Yersinia pestis from peri-domestic fleas in Uganda
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Journal Article
Molecular detection and characterization of Rickettsia felis , R. asembonensis , and Yersinia pestis from peri-domestic fleas in Uganda
2025
Overview
Fleas transmit a variety of zoonotic agents whose epidemiology and public health risk remains poorly understood in sub-Saharan Africa, including Uganda particularly outside plague-endemic areas. Common flea-borne zoonotic agents include
and
.
The study aimed at detecting and characterising flea-borne pathogens in peridomestic environments in Uganda.
We collected fleas from domestic animals, chickens, rodents, and homestead environments; pooled them by species, collection time, and host species. A total of 172 pools were analyzed for
gene. Further, 62 pools were tested for
species
, and
genes by PCR and Sanger sequencing.
Five flea species were identified:
, and
. Genus,
accounted for 84.8% of fleas collected, mostly found on dogs and goats. The flea species were found across all districts, year-round, with higher numbers collected in dry seasons than rainy seasons.
constituted 74% of rodents captured from human dwellings and was the only rodent species with fleas, where
was the predominant species. All 172 pools were negative for
.
spp. was detected in 29/62 (46.8%) pools by the target genes. Of 25
amplicons sequenced, 4% were identified as
from
, 92% were
from multiple flea species, and 4% were identified as
Rickettsia senegalensis.
The survey identified high pool detection rate of
spp. in fleas,suggestingrisk of human exposure and infection. This was the first report of
spp. in
and detection of
R. senegalensis in Uganda.
Publisher
Taylor & Francis Ltd,Taylor & Francis
Subject
