Prevalence of Salmonella and distribution of Serovars Isolated from Retail Raw Chicken Gizzards in Abidjan, Côte D’ivoire

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Germain Tago Karou, Honoré Ouattara, Souleymane Bakayoko

Institut Pasteur de Côte d’Ivoire 01 BP 490 Abidjan

Laboratoire de Biotechnologie UFR Biosciences, Université Félix Houphouët Boigny de Cocody Abidjan 22 BP 582 Abidjan 22.

Unité de Formation et de Recherche  en Sciences médicales de l’Université Félix Houphouët Boigny de Cocody Abidjan 08 BP 582 Abidjan

The present study was conducted to determine the prevalence of Salmonella, antibiotic susceptibility and distribution of serovars in retail raw chicken gizzards in Abidjan, Côte d’Ivoire. A total of 300 samples of chicken gizzards were collected from a big central retail market in Adjamé from October to March (6 months) and examined for the presence of Salmonella. For the isolation and identification of Salmonella, the  technique recommended by the international organization for standardization (ISO6579, 2002) was used. Serotyping was conducted by slide agglutination test using Salmonella polyvalent O and H antisera, a French AFNOR reference method. Determination of antibiotic profiles of Salmonella strains was carried out by the CLSI method of disk dissemination in Mueller Hinton (MH) agar medium. Salmonella was detected from 156 (52.00%) of the 300 samples examined. No typhoidal Salmonella (0.00%) was detected. Out of the 156 Salmonella isolated, 9.62% (15/156) of the strains were found lactose positive. Out of the 156 Salmonella isolates, four different serovars were identified: Salmonella Hadar the most prevalent (71.15%), Salmonella Enteritidis (3.85%), Salmonella Derby (3.20%), Salmonella Essen (3.20%), and non determined serovars (18.60%). The overall profile of antibiotic resistance of the strains showed high rates of resistance to Tetracyclin (94.08%), nalidixic acid (70.39%), ampicillin (67.76%) and amoxicillin + nalidixic acid (63.09%). S. Hadar showed a high level of resistance to tetracycline (94.50%), nalidixic acid (89.91%), ampicillin (89.00%) and amoxicillin + nalidixic acid (80.56%).

 Keywords: Prevalence; Salmonella; Salmonella Hadar; chicken gizzards; Côte d’Ivoire

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