Prevalencia de Salmonella spp., en ganglios mesentéricos de porcinos en plantas de beneficio Colombianas

Abstract

Objective. To determine the prevalence of Salmonella spp., in pigs mesenteric ganglion, from different regions of Colombia. Materials and Methods. A stratified sampling by proportional fixation was carried out at benefit plants of each of the 13 participating departments, whose pork production volume is representative at national level. Sampling was performed during five months, for a total of 457 samples analyzed. Salmonella spp., identification was performed by the MDS Molecular System, later isolates were confirmed in Maldi-TOF MS. Antimicrobial susceptibility of the isolates was determined using the B1016-180 panel and statistical analysis was performed in Whonet 2016, some of the multi-resistant isolates were them serotyped by Kauffman-White method. Results. National prevalence was 28.2%, with the presence of S. Typhimurium, S. Agama, S. London, S. Agona, S. Haifa and S. 1,4, Resistance to antibiotics frequently used in human (23.6% Trimethoprim/Sulfamethoxazole, 2.7% Cefotaxime (CTX), 11.8% Ampicillin (AMP) and 1.8% Ciprofloxacin) was found. Conclusion. The prevalence of Salmonella in mesenteric ganglia was 28.2%, being the Huila region the one with the highest prevalence, recovering atypical serotypes such as S. London and S. Haifa. Resultados. La prevalencia nacional fue 28.2%, con presencia de los serotipos S. Typhimurium, S. Agama, S. London, S. Agona, S. Haifa y S. 1,4,12: i : --. Se encontró resistencia a antibióticos de uso frecuente en humanos (23.6% Trimetoprim/Sulfametoxazol, 2.7% Cefotaxime (CTX), 11.8% Ampicilina (AMP) y 1.8% Ciprofloxacina). Conclusión. La prevalencia de Salmonella en ganglios mesénticos fue del 28.2%, siendo la región del Huila la que más aportó, se recuperaron serotipos atípicos como S. London y S. Haifa Keywords

Multidrug-resistant Salmonella spp. in fecal samples of pigs with suspected salmonellosis in Antioquia, Colombia, 2019–2021

“…Other studies in Colombia have reported a prevalence of Salmonella spp. of 3% in pig carcasses, 13% in environmental samples from slaughterhouses, and 28% in samples of pig mesenteric ganglia ( 8 ).…”

“…Salmonellosis in pigs is treated using antimicrobials including amoxicillin–clavulanic acid, ampicillin, ceftiofur, ciprofloxacin, chloramphenicol, florfenicol, gentamicin, sulfamethoxazole–trimethoprim, tetracycline, and macrolide antibiotics such as tilmicosin – many of these antimicrobials are important for human therapy ( 8 ). Antimicrobials are used in animals not only for treatment, but also for controlling the spread of infection (metaphylaxis), preventing infection (prophylaxis), improving feed efficiency, and promoting growth ( 9 ).…”

“…Previous studies have provided baseline data on antimicrobial resistance patterns of Salmonella spp. in pigs in the country ( 5 , 7 , 8 ). However, data from fecal samples in live animals with suspected salmonellosis are limited ( 4 ).…”

“…Furthermore, no studies have investigated the factors associated with MDR. In addition, with the exception of one study in four regions of Colombia ( 17 ), most of the previously published studies ( 8 , 10 – 12 ) were conducted in specific municipalities, with small sample sizes and limited generalizability ( 18 ). Therefore, the aim of the present study was to: (i) determine the proportion of S. enterica in fecal samples of pigs with suspected salmonellosis which were analyzed at the veterinary diagnostic laboratory of the University of Antioquia, Colombia, between 2019 and 2021; and (ii) describe the serotypes and antibiotic resistance patterns.…”

Pilot study of the productivity and Salmonella seroprevalence in pigs administered organic acids

“…In 2020, 13.0% of the human cases of salmonellosis reported in the European Union (EU) were due to consumption of contaminated pork. In 2015, the Salmonella prevalence was 28.2% on pork carcasses at abattoirs in Colombia with S. Typhimurium, S. Agama and S. Agona being the main serotypes found (9). Comprehensive control of Salmonella throughout the food value chain can decrease the incidence of human salmonellosis (6,10,11).…”