Evaluating two live-attenuated vaccines against serovar Reading in turkeys: reduced tissue colonization and cecal tonsil transcriptome responses.

Vaccines that cross-protect across serovars of () would be a beneficial intervention against emerging and persistent isolates of concern for the turkey industry. The 2017-2019 foodborne outbreak of serovar Reading (. Reading) revealed the need for effective control of this serovar in turkey production.

Tetracycline resistance gene transfer from Escherichia coli donors to Salmonella Heidelberg in chickens is impacted by the genetic context of donors.

Chicken ceca are a rich source of bacteria, including zoonotic pathogens such as Salmonella enterica. The microbiota includes strains/species carrying antimicrobial resistance genes and horizontal transfer of resistance determinants between species may increase the risk to public health and farming systems. Possible sources of these antimicrobial resistance donors - the eggshell carrying bacteria from the hen vertically transmitted to the offspring, or the barn environment where chicks are hatched and raised - has been little explored.

Genomic and phenotypic characterization of multidrug-resistant serovar Reading isolates involved in a turkey-associated foodborne outbreak.

is a global bacterial foodborne pathogen associated with a variety of contaminated food products. Poultry products are a common source of -associated foodborne illness, and an estimated 7% of human illnesses in the United States are attributed to turkey products. From November 2017 to March 2019, the Centers for Disease Control and Prevention reported a turkey-associated outbreak of multidrug-resistant (MDR; resistant to ≥3 antimicrobial classes) serovar Reading (.

Commercial vaccine provides cross-protection by reducing colonization of Salmonella enterica serovars Infantis and Hadar in turkeys.

Human foodborne outbreaks with antibiotic-resistant Salmonella enterica associated with contaminated poultry products have recently involved serogroup C serovars Infantis and Hadar. The current study evaluated a commercially available Salmonella vaccine for cross-protection against Infantis and Hadar serovars in turkeys. The live, attenuated S.

Genomic and phenotypic comparison of two variants of multidrug-resistant serovar Heidelberg isolated during the 2015-2017 multi-state outbreak in cattle.

subspecies serovar Heidelberg ( Heidelberg) has caused several multistate foodborne outbreaks in the United States, largely associated with the consumption of poultry. However, a 2015-2017 multidrug-resistant (MDR) Heidelberg outbreak was linked to contact with dairy beef calves. Traceback investigations revealed calves infected with outbreak strains of Heidelberg exhibited symptoms of disease frequently followed by death from septicemia.