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Sci Rep ; 12(1): 1132, 2022 01 21.
Article in English | MEDLINE | ID: mdl-35064157

ABSTRACT

Leptospirosis is a global zoonotic disease caused by pathogenic bacteria of the genus Leptospira. We sought to determine if rodents in U.S. Virgin Islands (USVI) are carriers of Leptospira. In total, 140 rodents were sampled, including 112 Mus musculus and 28 Rattus rattus. A positive carrier status was identified for 64/140 (45.7%); 49 (35.0%) were positive by dark-field microscopy, 60 (42.9%) by culture, 63 (45.0%) by fluorescent antibody testing, and 61 (43.6%) by real-time polymerase chain reaction (rtPCR). Molecular typing indicated that 48 isolates were L. borgpetersenii and 3 were L. kirschneri; the remaining nine comprised mixed species. In the single culture-negative sample that was rtPCR positive, genotyping directly from the kidney identified L. interrogans. Serotyping of L. borgpetersenii isolates identified serogroup Ballum and L. kirschneri isolates as serogroup Icterohaemorrhagiae. These results demonstrate that rodents are significant Leptospira carriers and adds to understanding the ecoepidemiology of leptospirosis in USVI.


Subject(s)
Carrier State/epidemiology , Disease Reservoirs/microbiology , Leptospira/isolation & purification , Leptospirosis/veterinary , Rodent Diseases/epidemiology , Animals , Carrier State/diagnosis , Carrier State/microbiology , Carrier State/transmission , Female , Humans , Leptospira/genetics , Leptospirosis/epidemiology , Leptospirosis/microbiology , Leptospirosis/transmission , Male , Mice , Molecular Typing , Public Health , Rats , Rodent Diseases/diagnosis , Rodent Diseases/microbiology , Rodent Diseases/transmission , United States Virgin Islands/epidemiology , Zoonoses
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