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ISSN 1561-3054 (Electronic)

2022, Number 2

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Rev Cubana Med Trop 2022; 74 (2)

Molecular detection of leptosipira in synanthropic and wild rodents from Villavicencio municipality, Colombia

Sánchez-Lerma L, Rojas-Gulloso A, Contreras-Cogollo V, Pavas-Escobar N, Barajas-Pardo D, Mattar-Velilla S

Language: English
References: 21
Page:
PDF size: 453.79 Kb.


ABSTRACT

Introduction: Rodents are potential transmitters of Leptospira spp. In the municipality of Villavicencio, Colombia, leptospirosis is a disease that, although notifiable, is still underreported. In this region, rodent species that can host pathogenic leptospira remain unknown.
Objective: To detect the presence of Leptospira spp. through molecular analysis in rodents (Rodentia) from peri-urban and rural areas belonging to the municipality of Villavicencio in Colombia.
Methods: Peri-urban and rural areas of the townships belonging to Villavicencio municipality were selected for sampling. These areas presented similar ecological conditions: they were near water bodies and peridomiciliary areas, and some of them included fields of agricultural crops. Rodents´ kidneys were removed and frozen in liquid nitrogen. DNA was extracted using a commercial kit and subsequently amplified through conventional polymerase chain reaction.
Results: The rodent species collected were: Rattus rattus, Mus musculus, Zygodontomys brevicauda, Oligoryzomys sp, Hylaeamys (formerly Oryzomys) and Proechimys cf. oconnelli. Leptospira DNA was amplified in six rodents and the purified amplicons were sent to Macrogen Inc. (Seoul, Korea) for sequencing. The alignment analysis of the sequenced products demonstrated 98.64% of coverage and identity with Leptospira interrogans.
Conclusions: This is the first study carried out on wild and synanthropic rodents in the municipality of Villavicencio. The incidence of leptospirosis raises the alarm due to the important role of these small mammals in the transmission of this zoonosis, which is considered the second cause, after dengue, of undifferentiated febrile illness in Villavicencio.


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