Cattle farming can promote diarrheal disease transmission through waste, effluents or cattle fecal matter. The study aims to characterize the diarrheagenic Escherichia coli (DEC) isolated from cattle feces, manure in the composting process and slurry, collected from four cattle markets in Ouagadougou. A total of 585 samples (340 cattle feces, 200 slurries and 45 manures in the composting process) were collected from the four cattle markets between May 2015 and May 2016. A multiplex Polymerase Chain Reaction (PCR), namely 16-plex PCR, was used to screen simultaneously the virulence genes specific for shiga toxin-producing E. coli (STEC), enteropathogenic E. coli (EPEC), enterotoxigenic E. coli (ETEC), enteroinvasive E. coli (EIEC) and enteroaggregative E. coli (EAEC). DEC was detected in 10.76% of samples. ETEC was the most prevalent (9.91%). STEC and EAEC have been observed with the same rate (0.51%). ETEC were detected in 12.64% of cattle feces, in 6.66% of manure in the composting process and in 5% of slurry. STEC were detected in 0.58% of cattle feces and in 2.22% of manure in the composting process. EAEC was detected only in 1% of slurry and in 2.22% of manure in the composting process. ETEC strains were identified based on estIa gene and/or estIb gene and/or elt gene amplification. Of the 58 ETEC, 10.34% contained astA, 17.24% contained elt, 3.44% contained estIa and 79.31% contained estIb. The two positive EAEC strains contained only the aggR gene, and the third was positive only for the pic gene. The results show that effluent from cattle markets could contribute to the spreading of DEC in the environment in Burkina Faso.

The emergence of antimicrobial-resistant bacteria in developing countries increases risks to the health of both such countries’ residents and the global community due to international travel. It is consequently necessary to investigate antimicrobial-resistant pathogens in countries such as Burkina Faso, where surveillance data are not available. To study the epidemiology of antibiotic resistance in Salmonella, 102 Salmonella strains isolated from slaughtered chickens were subjected to whole-genome sequencing (WGS) to obtain information on antimicrobial resistance (AMR) genes and other genetic factors. Twenty-two different serotypes were identified using WGS, the most prevalent of which were Hato (28/102, 27.5%) and Derby (23/102, 22.5%). All strains analyzed possessed at least one and up to nine AMR genes, with the most prevalent being the non-functional aac(6′)-Iaa gene, followed by aph(6)-Id. Multi-drug resistance was found genotypically in 36.2% of the isolates for different classes of antibiotics, such as fosfomycin and β-lactams, among others. Plasmids were identified in 43.1% of isolates (44/102), and 25 plasmids were confirmed to carry AMR genes. The results show that chicken can be considered as a reservoir of antibiotic-resistant Salmonella strains. Due to the prevalence of these drug-resistant pathogens and the potential for foodborne illnesses, poultry processing and cooking should be performed with attention to prescribed safe handling methods to avoid cross-contamination with chicken products.

The study investigated the prevalence and antibioresistance profil of Salmonella sp. serovars isolated from eggs and poultry in stock farming. A total of 245 eggs and 98 laying hens fecal matters from different breeding sheds were collected. The samples were processed for identification and serotyping of Salmonella sp using microbiological standard methods and Kauffman-White scheme respectively. Salmonella sp isolates antibiotic susceptibility to antimicrobial agents was tested by disk diffusion method. A total of 63 Salmonella isolates were recovered with positive samples from eggs (11.8%) and from faecal matter (12.24%). The successful serotyping of 53/63 isolates revealed the presence of S. 51%). Ten strains (15.87%) were untypable and ten (15.87%) belong to different serogroups such F and O. All the sérotypes shown resistance to at least one antibiotic while, 41 (65.08%) were multi-resistant to Erythromycin, Streptomycin, Tetracycline, Ceftriaxon, while high sensitivity was recorded for Chloramphenicol, Ciprofloxacin, Nalidixic acid, Imipenem, Cephalexin, Sulfamethoxazole-trimethoprim and Colistin Sulfate. These results suggest that eggs from stock farming are contaminated and harbour resistant Salmonella sp. It highlights worry in antibiotics use in stock farming, the need for farm workers and consumers education about safe handling of eggs.

Consumption of contaminated poultry and poultry products by Salmonella is a public health problem worldwide. The aim of this study was to determine the prevalence, serotypes and antibiotic susceptibility of Salmonella isolated from slaughtered poultry. A total of 563 intestine samples from slaughtered chickens (n= 283) and guinea fowl (n=280) were collected from 7 open markets in 2 urban and 2 rural areas of Burkina Faso. The samples were processed for the isolation and identification of associated Salmonella using microbiological standard methods. The suspected colonies were subjected to biochemical tests and serotyped by slide agglutination test according to Kauffman-White scheme. Antibiotic sensitivity patterns of Salmonella were also investigated using commonly used antibiotics. Of the 563 intestines samples, 139 (24.69%) isolates were recovered, with 59/283 (20.84%) isolates from chicken and 80/280 (28.57%) isolates from guinea fowl. The successful serotyping of 109/139 isolates revealed 9 serotypes namely Typhimurium,

Background: The emergence and spread of multidrug-resistant bacteria have become a major public health problem worldwide, particularly in developing countries such as Burkina Faso. This study aims to determine phenotypic and genotypic antibiotic resistant diarrheagenic Escherichia coli (DEC) from patients with diarrhea in Ouagadougou, Burkina Faso. Methodology: Microbiological and biochemical analysis were done to detect two hundred and ninety-two (292) strains. The susceptibility of the strains to antibiotics was determined by the agar disc diffusion method. 16-plex-PCR assays were carried out to detect both virulence and resistance genes encoding betalactams, quinolones, phenicols, tetracyclines and virulence gene of DEC. Results: Diarrheagenic Escherichia coli was detected in 8% (23/292) of patients with diarrhea using the 16-plex-PCR and 39.1% (9/23) of the DEC detected carry at least one resistance gene. Resistance rate in disc diffusion test was 86.96% to tetracycline, 65.23% to cotrimoxazole, 17.4% to nalidixic acid, 17.4% to norfloxacin, 17.4% to ciprofloxacin, 13.04% to ceftriaxone, 13.04% to cefotaxime, 8.7% to gentamicin, 8.7% to Chloramphenicol, 0% to netilmicin. The prevalence of different resistance genes in the studied strains varied from 44.4% to 5.5%. The gene Tet coding for resistance to tetracycline was found in 8 strains (44.4%). The CatA gene coding for resistance to Chloramphenicol was detected in 38.9% of isolates. The qnrS, bla SHV and bla OXA genes were each detected in 5.5% of isolates. No strain hosts the qnrA, qnrB and bla TEM genes. Conclusion: This study identified β-lactams, quinolones, phenicols and te-