Occurrence, drug resistance, and virulence genes of Salmonella isolated from chicken and eggs

Publication date: Available online 13 February 2020Source: Food ControlAuthor(s): Dan Hai, Xingpeng Yin, Zhaoxin Lu, Fengxia Lv, Haizhen Zhao, Xiaomei BieAbstractSalmonella is considered one of the most important foodborne pathogens and is commonly associated with the consumption of eggs, chicken meat, chicken intestines and other animal products. Multidrug resistant (MDR) Salmonella strains are highly adaptive and have been responsible for several foodborne disease outbreaks. We investigated the genetic relatedness, antibiotic resistance and virulence genes of 160 strains which were recovered from 920 samples. The samples were collected from the chicken intestines and eggs in their environment, in the wet markets and chicken farm in Jiang Su province of China. Of the total 920 samples analysed, 160 (17.4%) were positive for Salmonella. 61 (61/440) strains were detected in egg samples and 99 (99/480) strains detected in chicken intestines samples. The detection rates of Salmonella were different in different months and at different sampling sites. The resistance of 160 Salmonella strains to 16 antibiotics was detected by the agar disk diffusion method. The isolates from chicken intestines and eggs were more resistant to sulfamethoxazole (SMZ), ceftriaxone (CRO), nalidixic acid (NAL), cefazolin (CFZ), and amoxicillin (AMX). In addition, the strains isolated from eggs were relatively resistant to gentamicin (GEN) and kanamycin (KAN), while the strains isolated from chicken inte...
Source: Food Control - Category: Food Science Source Type: research

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Conclusions: The higher prevalence of ESBL producingSalmonella typhi clinical strains raises the concern about transmission prevention and infection management in the community as well as clinical settings. Moreover, the study highlights the problem concerning the declining antibiotic arsenal for the therapeutic management of typhoid fever and the emergence and spread of XDR strains in Pakistan.
Source: The Journal of Infection in Developing Countries - Category: Infectious Diseases Source Type: research
We describe the epidemiology and antimicrobial susceptibility patterns of Salmonella enterica serovar Typhi (S. Typhi) infection in Laos based on isolates accrued over 18 years at Mahosot Hospital, Vientiane. All blood cultures collected from patients presenting with fever submitted to the Microbiology Laboratory at Mahosot Hospital (February 2000-December 2018) were included. This included patients from Vientiane and four provincial hospitals and one typhoid outbreak investigation. A total of 913 (1.5%) of 60,384 blood cultures were positive for S. Typhi. The majority of isolates with data available (712/898, 79.3%) were ...
Source: The American Journal of Tropical Medicine and Hygiene - Category: Tropical Medicine Authors: Tags: Am J Trop Med Hyg Source Type: research
In this study, 43 Salmonella phages were isolated from environmental resources and among them, phage D1-2 was selected since it exhibited the most potent lytic ability and the broadest host spectrum against tested Salmonella strains. Further study demonstrated that D1-2 shows high pH and thermal tolerances and a short latent period, together with a low frequency of emergence of phage resistance. D1-2 effectively inhibited the growth of two MDR Salmonella strains in liquid egg white and egg yolk at both 4 °C and 25 °C. Morphology and phylogeny indicated that D1-2 belongs to the Myoviridae family. Genome analysis of ...
Source: Food Research International - Category: Food Science Source Type: research
This study determined the diversity and antibiotic resistance gene profile of Salmonella enterica serovars isolated from humans and food animals. Using standard methods, Salmonella spp. were isolated from fecal samples, profiled for antimicrobial susceptibility and resistance genes. Seventy-one Salmonella isolates were recovered from both humans and food animals comprising cattle, sheep, and chicken. Forty-four serovars were identified, with dominant Salmonella Budapest (31.8%). Rare serovars were present in chicken (S. Alfort, S. Wichita, S. Linton, S. Ealing, and S. Ebrie) and humans (S. Mowanjum, S. Huettwillen, S. Lime...
Source: Acta Microbiologica et Immunologica Hungarica - Category: Microbiology Authors: Tags: Acta Microbiol Immunol Hung Source Type: research
(CNN) — When multidrug-resistant pathogens kept reappearing on the skin of premature babies in a German hospital’s neonatal intensive care unit, investigators were confused. Tests for contamination in the incubators, as well as among healthcare workers who came into contact with the preemies, were all coming up negative, according to a report on the case published Friday by the American Society for Microbiology. But tests showed the babies were continually being reinfected with Klebsiella oxytoca, a bacteria notorious for hospital-acquired infections such as pneumonia, urinary tract infection, soft tissue infec...
Source: WBZ-TV - Breaking News, Weather and Sports for Boston, Worcester and New Hampshire - Category: Consumer Health News Authors: Tags: Health News Offbeat CNN Source Type: news
Publication date: Available online 23 September 2019Source: Food ControlAuthor(s): Xiaojuan Yang, Qingping Wu, Jiahui Huang, Shi Wu, Jumei Zhang, Ling Chen, Xianhu Wei, Yingwang Ye, Yu Li, Juan Wang, Tao Lei, Liang Xue, Rui Pang, Youxiong ZhangAbstractRaw vegetables have been associated with numerous foodborne Salmonella outbreaks; however, there is little epidemiological or molecular data on Salmonella contaminants of raw vegetables in China. Here, we investigated the prevalence and molecular characteristics of Salmonella isolates from raw vegetables in China. In total, 406 raw vegetable samples were collected covering mo...
Source: Food Control - Category: Food Science Source Type: research
A recent multistate outbreak of infections with multidrug-resistant Salmonella enterica serotype Newport with decreased susceptibility to azithromycin was linked to U.S. beef and Mexican cheese, according to an epidemiologic investigation.Reuters Health Information
Source: Medscape Medical News Headlines - Category: Consumer Health News Tags: Public Health & Prevention News Source Type: news
An 2018 outbreak of multidrug resistant Salmonella enterica serotype Newport, with decreased susceptibility to azithromycin, has been linked to beef and raw cheese, most of which originated in Mexico.Morbidity &Mortality Weekly Report
Source: Medscape Today Headlines - Category: Consumer Health News Tags: Public Health & Prevention Journal Article Source Type: news
This report summarizes the investigation of a multistate MDR Salmonella outbreak conducted by CDC, state and local health departments, and the U.S. Department of Agriculture's Food Safety and Inspection Service. During June 2018-March 2019, 255 cases of infection with the outbreak strain were identified in 32 states; 43% of patients (89 of 206 with information on travel) reported recent travel to Mexico. Infections were linked to consumption of soft cheese obtained in Mexico and beef obtained in the United States. Consumers should avoid eating soft cheese that could be made from unpasteurized milk, regardless of the source...
Source: MMWR Morb Mortal Wkl... - Category: Epidemiology Authors: Tags: MMWR Morb Mortal Wkly Rep Source Type: research
THURSDAY, Aug. 22, 2019 -- A recent multidrug-resistant (MDR) Salmonella enterica serotype Newport outbreak, affecting patients in 32 states, was associated with soft cheese and beef consumption, according to a report published in the Aug. 23 issue...
Source: Drugs.com - Pharma News - Category: Pharmaceuticals Source Type: news
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