Genome divergence and increased virulence of outbreak associated Salmonella enterica subspecies enterica serovar Heidelberg
In this study, we compared the genomes of outbreak associated non-outbreak causingSalmonella ser.Heidelberg strains from diverse hosts and geographical regions. Human outbreak associated strains in this study were from a 2015 multistate outbreak ofSalmonella ser.Heidelberg involving 15 states in the United States which originated from bull calves. Our clinicopathologic examination revealed that cases involvingSalmonella ser.Heidelberg strains were predominantly young, less than weeks-old, dairy calves. Pre-existing or concurrent disease was found in the majority of the calves. Detection ofSalmonella ser.Heidelberg correlated with markedly increased death losses clinically comparable to those seen in herds infected withS. Dublin, a known serious pathogen of cattle. Whole genome based single nucleotide polymorphism based analysis revealed that these calf isolates formed a distinct cluster along with outbreak associated human isolates. The defining feature of the outbreak associated strains, when compared to older isolates ofS.Heidelberg, is that all isolates in this cluster containedSaf fimbrial genes which are generally absent inS.Heidelberg. The acquisition of several single nucleotide polymorphisms and the gain ofSaf fimbrial genes may have contributed to the increased disease severity of theseSalmonella ser.Heidelberg strains.
Publication date: Available online 12 July 2019Source: Food ControlAuthor(s): Haiqiang Wang, Elliot T. RyserAbstractDiced tomatoes have been linked to outbreaks of salmonellosis in the United States. Compared to slicing, commercial production of diced tomatoes is more complex and includes mechanical dicing as well as washing, dewatering, conveying, and packing. Consequently, this study aimed to 1) quantify Salmonella transfer during pilot-scale dicing of tomatoes, 2) assess the efficacy of three sanitizer treatments against Salmonella during flume tank washing, and 3) assess the efficacy of four sanitizers against Salmonel...
The illnesses in this outbreak began between Jan. 14, 2019 and June 16, 2019. Most of the patients are older than 60.
Here are some of the latest health and medical news developments, compiled by the editors of HealthDay: Salmonella Outbreak Linked to Pig Ear Dog Treats: CDC A salmonella outbreak linked to contact with pig ear dog treats has sickened 45 people in...
Outbreaks of salmonella infections are being linked to contact with an increase in backyard chickens, ducks and other poultry, according to the Centers for Disease Control and Prevention (CDC). "Salmonella is a bacteria that is often present in the intestinal tract or in the GI tract," says Dr. Summer Allen, a family medicine physician at [...]
A Cavi brand of whole, fresh papayas " are likely the source " of a salmonella outbreak in eight states, the Centers for Disease Control and Prevention said.
The Centers for Disease Control and Prevention, Food and Drug Administration and local health officials are investigating salmonella outbreaks in 13 states that may have been caused by pig ear dog treats.
Even if you don't eat pig ear dog treats, here is how this Salmonella outbreak could affect you.
A salmonella outbreak that's sickened 62 people in eight states appears to be linked to whole, fresh papayas from Mexico.
Here are some of the latest health and medical news developments, compiled by the editors of HealthDay: Salmonella Outbreak in Eight States Linked to Mexican Papayas: CDC A salmonella outbreak that's sickened 62 people in eight states appears to...
Got papaya? Say papay-no, if they're from Mexico and you are in these states.