Publications des scientifiques de l'IRD

Zimmermann R. E., Ribolzi Olivier, Pierret Alain, Rattanavong S., Robinson M. T., Newton P. N., Davong V., Auda Y., Zopfi J., Dance D. A. B. (2018). Rivers as carriers and potential sentinels for Burkholderia pseudomallei in Laos. Scientific Reports - Nature, 8, p. art. 8674 [7p.]. ISSN 2045-2322.

Titre du document
Rivers as carriers and potential sentinels for Burkholderia pseudomallei in Laos
Année de publication
2018
Type de document
Article référencé dans le Web of Science WOS:000434252000010
Auteurs
Zimmermann R. E., Ribolzi Olivier, Pierret Alain, Rattanavong S., Robinson M. T., Newton P. N., Davong V., Auda Y., Zopfi J., Dance D. A. B.
Source
Scientific Reports - Nature, 2018, 8, p. art. 8674 [7p.] ISSN 2045-2322
Burkholderia pseudomallei, causative agent of the often fatal disease melioidosis, dwells in tropical soils and has been found in freshwater bodies. To investigate whether rivers are potential habitats or carriers for B. pseudomallei and to assess its geographical distribution in Laos, we studied 23 rivers including the Mekong, applying culture-based detection methods and PCR to water filters and streambed sediments. B. pseudomallei was present in 9% of the rivers in the dry season and in 57% in the rainy season. We found the pathogen exclusively in Southern and Central Laos, and mainly in turbid river water, while sediments were positive in 35% of the B. pseudomallei-positive sites. Our results provide evidence for a heterogeneous temporal and spatial distribution of B. pseudomallei in rivers in Laos with a clear north-south contrast. The seasonal dynamics and predominant occurrence of B. pseudomallei in particle-rich water suggest that this pathogen is washed out with eroded soil during periods of heavy rainfall and transported by rivers, while river sediments do not seem to be permanent habitats for B. pseudomallei. Rivers may thus be useful to assess the distribution and aquatic dispersal of B. pseudomallei and other environmental pathogens in their catchment area and beyond.
Plan de classement
Ecologie, systèmes aquatiques [036] ; Entomologie médicale / Parasitologie / Virologie [052]
Description Géographique
LAOS
Localisation
Fonds IRD [F B010073118]
Identifiant IRD
fdi:010073118
Contact