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Volume 29, Number 2—February 2023

Novel Species of Brucella Causing Human Brucellosis, French Guiana

Frédégonde About, Theo Pastre, Mathilde Boutrou, Alex Yahiaoui Martinez, Alessia Melzani, Sandrine Peugny, Céline Michaud, Sami Zouaoui, Thierry Carage, Vincent Sainte Rose, Magalie Demar, Jean-Philippe Lavigne, Félix Djossou, David O’Callaghan, Loïc Epelboin, and Anne KerielComments to Author 
Author affiliations: Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne, French Guiana (F. About, M. Boutrou, A. Melzani, C. Michaud, V. Sainte Rose, M. Demar, F. Djossou, L. Epelboin); Centre Hospitalier de Kourou, Kourou, French Guiana (F. About, M. Boutrou, S. Zouaoui, T. Carage); Carémeau University Hospital de Nimes, Nimes, France (T. Pastre, A.Y. Martinez, J.-P. Lavigne, D. O’Callaghan, A. Keriel); Centre Hospitalier de l’Ouest Guyanais, Saint-Laurent du Maroni, French Guiana (S. Peugny); Université de Guyane, Cayenne (M. Demar, L. Epelboin); Université de Montpellier, Nimes (J.-P. Lavigne, D. O’Callaghan, A. Keriel); Institut National de la Santé et de la Recherche Médicale (INSERM), Nimes (D. O’Callaghan, A. Keriel); INSERM, Cayenne (L. Epelboin)

Main Article


Results of gallery tests for Brucella isolates obtained from 2 patients with brucellosis, French Guiana, 2020

Incubation time Test BRSO-2020-213 BRSO-2021-230
24 h
Reduction of nitrates to nitrites or nitrogen + +
Indole production
Fermentation of glucose
Arginine dihydrolase
Urease + +
Hydrolysis of esculin
Hydrolysis of gelatin
β-galactosidase production

48 h Glucose assimilation + +
Arabinose assimilation + +
Mannose assimilation + +
Mannitol assimilation - -
N-acetyl-glucosamine assimilation + +
Maltose assimilation
Potassium gluconate assimilation
Capric acid assimilation
Adipic acid assimilation
Malate assimilation
Trisodium citrate assimilation
Phenyl acetic acid assimilation
Cytochrome oxidase + +

*API20NE gallery tests (bioMérieux, were performed according to the manufacturer’s instructions. +, positive, –, negative.

Main Article

Page created: December 20, 2022
Page updated: January 21, 2023
Page reviewed: January 21, 2023
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