Livestock are known to harbor in their gastrointestinal () tract and lymphatic tissues. Pathogens may be transferred from the GI tract to external carcass surfaces during normal harvest procedures but can be mitigated by antimicrobial carcass interventions. Lymph nodes () are typically encased in fat and are protected from antimicrobial carcass surface treatments, thus serving as a possible root cause of foodborne illnesses attributed to in meat products. Members of the pork industry are committed to food safety and want to better understand as a potential contaminant in pork products. To establish a baseline of prevalence in porcine LNs across the United States, 21 commercial pork harvest facilities, representing northern ( = 12) or southern ( = 9) geographical regions, participated in this study. As processing volumes allowed, 25 carcasses were selected from each establishment. From each carcass, left and right superficial inguinal LNs ( =1,014 LNs) were removed and pooled to yield one sample per animal or = 507 total LN samples. prevalence rates differed ( < 0.05) between hog types in both regions. Specifically, 6.4% of market hog and 37.0% of sow samples were positive in the northern region. This was reversed in the southern region as 13.0% of market hog and 4.8% of sow samples were positive. There also was a difference ( < 0.05) in prevalence rates between northern and southern regions for sows, but not market hogs ( > 0.05). Type of chilling method (conventional, blast, or other) used at each market hog facility ( = 12) was documented. In the northern region, prevalence rates of across chilling types were as follows: 20.0%, 2.7%, and 1.3% positive samples for conventional, other, and blast chill methods, respectively. In the southern region, 20.0% of samples were positive for conventional, 0.0% for blast, and 12.0% for other chilling methods. In both regions, samples from conventionally chilled carcasses returned more ( < 0.05) positive results than any other chill method. Overall, the higher rate of prevalence in northern sows warrants further investigation, and members of the pork industry would benefit from the identification of possible methods to address the presence of in porcine LNs.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7200438PMC
http://dx.doi.org/10.1093/tas/txy072DOI Listing

Publication Analysis

Top Keywords

prevalence rates
12
market hog
12
samples positive
12
lymph nodes
8
sows market
8
market hogs
8
antimicrobial carcass
8
members pork
8
pork industry
8
porcine lns
8

Similar Publications

Introduction: The frequency of scabies and its relationship with the coronavirus disease 2019 (COVID-19) pandemic is a current scientific curiosity in Turkey and worldwide. The data presented in this article will help raise awareness of dermatologists in situations such as pandemic-induced quarantines where scabies can spread rapidly.

Methodology: This was a retrospective study to compare patients who presented with scabies and were evaluated during the COVID-19 pandemic, with those who presented before and after the pandemic, in terms of the diagnosis ratios.

View Article and Find Full Text PDF

Introduction: The coronavirus disease 2019 (COVID-19) pandemic has significantly impacted public transportation systems worldwide. In this study, we evaluated the rate of COVID-19 positivity and its associated factors among users of public transportation in socioeconomically disadvantaged regions of Brazil during the pre-vaccination phase of the pandemic.

Methodology: This ecological study, conducted in Aracaju city in Northeast Brazil, is a component of the TestAju Program.

View Article and Find Full Text PDF

Introduction: Coronavirus disease 2019 (COVID-19) is a life-threatening disease that was declared a pandemic in March 2020. Organ transplant recipients are vulnerable to infection and complications from COVID-19. The objective of this study was to investigate the rates of infection, mortality, and case-fatality ratios (CFR) in solid organ transplant recipients and patients on the waiting list for organ allocation in the period prior to the availability of specific vaccines.

View Article and Find Full Text PDF

Background: Ovarian cancers (OC) and cervical cancers (CC) have poor survival rates. Tumor-infiltrating lymphocytes (TILs) play a pivotal role in prognosis, but shared immune mechanisms remain elusive.

Methods: We integrated single-cell RNA sequencing (scRNA-seq) and spatial transcriptomics (ST) to explore immune regulation in OC and CC, focusing on the PI3K/AKT pathway and FLT3 as key modulators.

View Article and Find Full Text PDF

Estimates and trends in death and disability from atrial fibrillation/atrial flutter due to high sodium intake, China, 1990 to 2019.

BMC Cardiovasc Disord

January 2025

Department of Cardiology, Affiliated Hospital of Hangzhou Normal University, Zhejiang Key Laboratory of Medical Epigenetics, School of Basic Medical Sciences,Hangzhou Institute of Cardiovascular Diseases, Engineering Research Center of Mobile Health Management System & Ministry of Education, Hangzhou Normal University, Hangzhou, 310015, China.

Objective: The effect of sodium intake on atrial fibrillation (AF)/atrial flutter (AFL), with respect to sex and age, has yet to be elucidated. This study aims to compare long-term trends in AF/AFL death and disability due to high sodium intake in China from 1990 to 2019.

Methods: We utilized data from the Global Burden of Disease study to assess the mortality and disability burden of AF/AFL attributable to high sodium intake (> 5 g/d) in China from 1990 to 2019.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!