[PMID]: | 28259176 |
[Au] Autor: | Rakotonanahary RJ; Harrison A; Maina AN; Jiang J; Richards AL; Rajerison M; Telfer S |
[Ad] Endereço: | Plague Unit, Institut Pasteur de Madagascar, Antananarivo, Madagascar. radoupty@pasteur.mg. |
[Ti] Título: | Molecular and serological evidence of flea-associated typhus group and spotted fever group rickettsial infections in Madagascar. |
[So] Source: | Parasit Vectors;10(1):125, 2017 Mar 04. |
[Is] ISSN: | 1756-3305 |
[Cp] País de publicação: | England |
[La] Idioma: | eng |
[Ab] Resumo: | BACKGROUND: Rickettsiae are obligate intracellular bacteria responsible for many febrile syndromes around the world, including in sub-Saharan Africa. Vectors of these pathogens include ticks, lice, mites and fleas. In order to assess exposure to flea-associated Rickettsia species in Madagascar, human and small mammal samples from an urban and a rural area, and their associated fleas were tested. RESULTS: Anti-typhus group (TGR)- and anti-spotted fever group rickettsiae (SFGR)-specific IgG were detected in 24 (39%) and 21 (34%) of 62 human serum samples, respectively, using indirect ELISAs, with six individuals seropositive for both. Only two (2%) Rattus rattus out of 86 small mammals presented antibodies against TGR. Out of 117 fleas collected from small mammals, Rickettsia typhi, a TGR, was detected in 26 Xenopsylla cheopis (24%) collected from rodents of an urban area (n = 107), while two of these urban X. cheopis (2%) were positive for Rickettsia felis, a SFGR. R. felis DNA was also detected in eight (31%) out of 26 Pulex irritans fleas. CONCLUSIONS: The general population in Madagascar are exposed to rickettsiae, and two flea-associated Rickettsia pathogens, R. typhi and R. felis, are present near or in homes. Although our results are from a single district, they demonstrate that rickettsiae should be considered as potential agents of undifferentiated fever in Madagascar. |
[Mh] Termos MeSH primário: |
Ratos/microbiologia Rickettsia/genética Rickettsia/isolamento & purificação Febre Maculosa das Montanhas Rochosas/microbiologia Febre Maculosa das Montanhas Rochosas/veterinária Doenças dos Roedores/microbiologia Sifonápteros/microbiologia Tifo Epidêmico Transmitido por Piolhos/microbiologia Tifo Epidêmico Transmitido por Piolhos/veterinária
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[Mh] Termos MeSH secundário: |
Adulto Animais Anticorpos Antibacterianos/sangue Feminino Seres Humanos Insetos Vetores/microbiologia Madagáscar Masculino Meia-Idade Filogenia Rickettsia/classificação Rickettsia/imunologia Febre Maculosa das Montanhas Rochosas/sangue Doenças dos Roedores/sangue Musaranhos/microbiologia Tifo Epidêmico Transmitido por Piolhos/sangue Adulto Jovem
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[Pt] Tipo de publicação: | JOURNAL ARTICLE |
[Nm] Nome de substância:
| 0 (Antibodies, Bacterial) |
[Em] Mês de entrada: | 1705 |
[Cu] Atualização por classe: | 170515 |
[Lr] Data última revisão:
| 170515 |
[Sb] Subgrupo de revista: | IM |
[Da] Data de entrada para processamento: | 170306 |
[St] Status: | MEDLINE |
[do] DOI: | 10.1186/s13071-017-2061-4 |
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