Salmonella serovars in laying hen flocks and commercial table eggs from a region of São Paulo state, Brazil

Abstract

Salmonella spp. is the main originator of human foodborne diseases worldwide and is mainly transmitted by food containing eggs. In Brazil, as a result of the lack of studies and data collection very little is known about the prevalence of Salmonella spp. in laying hen flocks and commercial table eggs. Consequently the present study was elaborated and aimed at generating data about Salmonella spp. in part of the Brazilian egg production chain. Eight flocks of day-old chicks, eight flocks of adult laying hens (four vaccinated with bacterin against Salmonella Enteritidis and four unvaccinated) and commercial table eggs from four supermarkets were examined. Salmonella spp. was isolated in 50 % of the newly hatched chicks, 25 % of the adult flocks and 1.5 % of egg samples examined. S. enterica subsp. enterica 4,12:r:-, S. Mbandaka, S. enterica subsp. enterica 6,7: z10:-, S. Enteritidis and S. Havana were the serovars isolated in birds. In commercial table-eggs S. Mbandaka, S. enterica subsp. enterica 6,7: z10:-and S. Braenderup were isolated. These results show that Salmonella spp. is present in laying hen flocks and consequently in eggs destined for human consumption. Probably, some of the Salmonella serovars are being introduced in egg farms by vertical via.

HPMCAS-Coated Alginate Microparticles Loaded with Ctx(Ile21)-Ha as a Promising Antimicrobial Agent against Salmonella Enteritidis in a Chicken Infection Model

“…Notably, S . Enteritidis remains one of the most important pathogens associated with poultry products. , In this regard, several efforts made by the poultry industry have reduced the cross-contamination along the food chain. Consequently, these mitigation strategies have benefited human health by avoiding the food poisoning caused by this high-priority pathogen.…”

“…Several efforts have been made to reduce the contamination and spread of S . Enteritidis along the poultry production chain, since this serovar is most often associated with poultry products. , However, the off-label use of conventional antimicrobials in animal husbandry is a global concern and has contributed to the emergence of multidrug-resistant (MDR) bacteria among poultry products. , This serious public health issue could have significant implications in the use of critically important drugs for therapy in human infection cases. − …”

Application of HPMCAS-coated Ctx(Ile21)-Ha peptide microparticles as a potential use to prevent systemic infection caused bySalmonellaEnteritidis in poultry

“…In this regard, this study proposes a novel product with combined techniques from food chemistry and biotechnology and pharmaceutical fields. Notably, S. Enteritidis remains one of the most important pathogens associated with poultry products 4,5 . In this regard, several efforts made by poultry industry have been reduced the cross-contamination along the food chain.…”

“…enterica serovar Enteritidis is one of the leading cause of foodborne diseases posing global concerns to one health and economy [1][2][3] . In this concern, several efforts have been made to reduce the contamination and spread of Salmonella Enteritidis along the poultry production chain, since this serovar is most often associated with poultry products 4,5 . Besides that, the overuse of antimicrobial agents in animal husbandry, have contributed to the emergence of virulent and multidrug resistant (MDR) strains among poultry products, which represents a critical public health issue, once it could have implications on human health 2,6,7 .…”

Ocorrência de Salmonella spp. e de microrganismos indicadores de qualidade em ovos comercializados na Região Metropolitana de São Luís, Maranhão

“…Apesar da redução, a ocorrência de Salmonella spp. em ovos ainda é registrada (Freitas Neto et al, 2014;EFSA & ECDC, 2019), sendo necessário o permanente monitoramento desse patógeno em produtos avícolas.…”