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Nosocomial infections are very common in African hospitals, particularly in neonatal units. These infections are most often caused by bacteria such as  Escherichia coli ,  Klebsiella  spp and  Staphylococcus  spp.  Salmonella  strains are rarely involved in nosocomial infections. Here, we report the first description of  S . Grumpensis in neonatal infections in Senegal. Seventeen  Salmonella  strains were isolated from hospitalized infants’ stool samples. The following resistance phenotype was described in strains: AMX R TIC R CF R  FOX R CFX R CTX R CAZ R IMP S ATM R NA R NOR R CIP R TM R GM R TE R SXT R . All isolates were susceptible to imipenem, 15 out of 17 produced an extended spectrum ß-lactamase (ESBL).  bla   OXA-1  ,  bla   SHV-1  ,  bla   TEM-1  ,  bla   CTX-M1   genes were detected in strains 8, 13, 5 and 8, respectively.  bla   CTX-M1   sequencing revealed the presence of  bla CTX-M-109. Thirteen of the 17  Salmonella  Grumpensis strains were analyzed by PFGE. These 13 isolates belonged to a single pulsotype and were genotypically identical. This is the first report of neonatal  S . Grumpensis infections in Senegal, and the first report of  bla CTX-M-109 in the genus  Salmonella .

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First Description of the Extended Spectrum-Beta-Lactamase Gene blaCTX-M-109 in Salmonella Grumpensis Strains Isolated from Neonatal Nosocomial Infections in Dakar, Senegal