The Epidemiology and Genetics of Antibiotic Resistance of Salmonella typhimurium Isolated from Diseased Animals in New York

1978 ◽  
Vol 137 (1) ◽  
pp. 67-73 ◽  
Author(s):  
J. F. Timoney
Keyword(s):  
New York ◽  
Antibiotic Resistance ◽  
Salmonella Typhimurium

Occurrence of Salmonella enterica Serotype Typhimurium DT104A in Retail Ground Beef

2002 ◽  
Vol 65 (2) ◽  
pp. 403-407 ◽  
Author(s):  
TONG ZHAO ◽  
MICHAEL P. DOYLE ◽  
PAULA J. FEDORKA-CRAY ◽  
PING ZHAO ◽  
SCOTT LADELY
Keyword(s):  
New York ◽  
Antibiotic Resistance ◽  
Salmonella Typhimurium ◽  
San Francisco ◽  
Salmonella Enterica ◽  
Antibiotic Resistance Genes ◽  
Ground Beef ◽  
Enteric Bacteria ◽  
Salmonella Spp ◽  
E Coli

Surveillance data of cattle and human isolates of Salmonella enterica serovar Typhimurium DT104 indicate that this pathogen emerged worldwide in the 1980s, particularly in cattle. Studies were conducted to determine the prevalence of Salmonella Typhimurium DT104 in ground beef. Samples were also tested for the presence of generic Escherichia coli. A total of 404 fresh ground beef samples obtained at retail stores from New York, San Francisco, Philadelphia, Denver, Atlanta, Houston, and Chicago were shipped overnight to Georgia for processing. Salmonella spp. were isolated from 14 (3.5%) samples. Eight different serotypes were identified among the isolates, including Salmonella Typhimurium (5), Salmonella Lille (3), Salmonella Montevideo (1), Salmonella Hadar (1), Salmonella Meleagridis (1), Salmonella Cerro (1), Salmonella Kentucky (1), and Salmonella Muenster (1). Antibiotic resistance profiles indicated that all five Salmonella Typhimurium isolates were resistant to ampicillin, streptomycin, sulfamethoxazole, ticarcillin, and tetracycline but that they were sensitive to chloramphenicol. Phage typing revealed that all five Salmonella Typhimurium isolates were DT104A, a subtype of DT104. All five Salmonella Typhimurium DT104A isolates were obtained from ground beef sampled from retail outlets in San Francisco. Pulsed-field gel electrophoresis (PFGE) genomic DNA profiles of the five Salmonella Typhimurium DT104A isolates from ground beef were indistinguishable from those of four control Salmonella Typhimurium DT104 penta-resistant isolates from cattle that were used for comparison. A total of 102 generic E. coli isolates were obtained, only three of which were multi-resistant to antibiotics. In addition, three E. coli isolates were recovered from samples that were positive for Salmonella Typhimurium DT104A. No correlation of antibiotic resistance profiles was observed between Salmonella Typhimurium DT104A and generic E. coli, as two of the three E. coli isolates were susceptible to all of the antibiotics tested, and the third isolate was resistant only to cephalothin. These data indicate that Salmonella Typhimurium DT104A can be isolated from retail ground beef, and because there was little overlap in antibiotic resistance patterns between Salmonella Typhimurium DT104A and E. coli isolates from the same ground beef samples, these limited data suggest that the transfer of antibiotic resistance genes among enteric bacteria in ground beef may not be common. This latter observation is further supported by the limited isolation of multiantibiotic-resistant E. coli from retail ground beef.

Effects of In-Feed Egg Yolk Antibodies on Salmonella Shedding, Bacterial Antibiotic Resistance, and Health of Pigs

2009 ◽  
Vol 72 (2) ◽  
pp. 267-273 ◽  
Author(s):  
ALAN G. MATHEW ◽  
SUKANYA RATTANATABTIMTONG ◽  
CHARLES M. NYACHOTI ◽  
LIN FANG
Keyword(s):  
Antibiotic Resistance ◽  
Blood Cell ◽  
Salmonella Typhimurium ◽  
Plasma Concentrations ◽  
Egg Yolk ◽  
Treatment Groups ◽  
Cell Counts ◽  
Egg Yolk Antibodies ◽  
Blood Cell Counts ◽  
White Blood Cell Counts

To determine effects of anti-Salmonella egg yolk antibodies on shedding and antibiotic resistance of Salmonella enterica Typhimurium, newly weaned pigs were randomly assigned to six dietary treatments. These treatment groups were (i) a control (basal) diet without additives and similar diets with (ii) egg yolk powder derived from chickens challenged with Salmonella Typhimurium antigens, (iii) a commercial egg yolk powder control, (iv) apramycin for 14 days followed by carbadox, (v) oxytetracycline, or (vi) spray-dried plasma protein. Treatments were provided beginning on day 3 of the trial, and all pigs were challenged with 5 ml of 108 CFU/ml Salmonella Typhimurium on day 7. Fecal samples were collected on days 0, 7, 8, 12, 14, 21, 58, 88, and 118 for isolation of Salmonella and Escherichia coli to determine shedding and antibiotic resistance patterns. Body weights, white blood cell counts, and plasma concentrations of anti-Salmonella immunoglobulin G and porcine interleukin 1β were analyzed as indicators of animal health. The percentage of pigs shedding Salmonella was lower for antibiotic treatment groups compared with other groups; however, resistance was greater in E. coli from pigs fed antibiotics than in pigs in other treatment groups. Health and performance indicators (pig weight gains, white blood cell counts, and plasma concentrations of anti-Salmonella antibodies) did not differ between treatment groups. These studies indicate that feeding egg yolk containing anti-Salmonella immunoglobulin Y may not be effective in controlling shedding of Salmonella in pigs.

scholarly journals Longitudinal Comparison of Bacterial Diversity and Antibiotic Resistance Genes in New York City Sewage

mSystems ◽  
2019 ◽  
Vol 4 (4) ◽  
Author(s):  
Susan M. Joseph ◽  
Thomas Battaglia ◽  
Julia M. Maritz ◽  
Jane M. Carlton ◽  
Martin J. Blaser
Keyword(s):  
New York ◽  
New York City ◽  
Antibiotic Resistance ◽  
Resistance Genes ◽  
York City ◽  
Bacterial Resistance ◽  
Hot Spot ◽  
Antibiotic Resistance Genes ◽  
Anthropogenic Activity ◽  
Time Points

ABSTRACT Bacterial resistance to antibiotics is a pressing health issue around the world, not only in health care settings but also in the community and environment, particularly in crowded urban populations. The aim of our work was to characterize the microbial populations in sewage and the spread of antibiotic resistance within New York City (NYC). Here, we investigated the structure of the microbiome and the prevalence of antibiotic resistance genes in raw sewage samples collected from the fourteen NYC Department of Environmental Protection wastewater treatment plants, distributed across the five NYC boroughs. Sewage, a direct output of anthropogenic activity and a reservoir of microbes, provides an ecological niche to examine the spread of antibiotic resistance. Taxonomic diversity analysis revealed a largely similar and stable bacterial population structure across all the samples, which was found to be similar over three time points in an annual cycle, as well as in the five NYC boroughs. All samples were positive for the presence of the seven antibiotic resistance genes tested, based on real-time quantitative PCR assays, with higher levels observed for tetracycline resistance genes at all time points. For five of the seven genes, abundances were significantly higher in May than in February and August. This study provides characteristics of the NYC sewage resistome in the context of the overall bacterial populations. IMPORTANCE Urban sewage or wastewater is a diverse source of bacterial growth, as well as a hot spot for the development of environmental antibiotic resistance, which can in turn influence the health of the residents of the city. As part of a larger study to characterize the urban New York City microbial metagenome, we collected raw sewage samples representing three seasonal time points spanning the five boroughs of NYC and went on to characterize the microbiome and the presence of a range of antibiotic resistance genes. Through this study, we have established a baseline microbial population and antibiotic resistance abundance in NYC sewage which can prove to be very useful in studying the load of antibiotic usage, as well as for developing effective measures in antibiotic stewardship.

Antibiotic Resistance of Salmonella spp. and Listeria spp. Isolates from Traditionally Made Fresh Sausages in Greece

1998 ◽  
Vol 61 (10) ◽  
pp. 1378-1380 ◽  
Author(s):  
AMIN ABRAHIM ◽  
ANNA PAPA ◽  
NIKOLAOS SOULTOS ◽  
IOANNIS AMBROSIADIS ◽  
ANTONIS ANTONIADIS
Keyword(s):  
Antibiotic Resistance ◽  
Listeria Monocytogenes ◽  
Salmonella Typhimurium ◽  
Salmonella Enteritidis ◽  
Antibacterial Agents ◽  
Listeria Innocua ◽  
Salmonella Spp ◽  
Listeria Welshimeri ◽  
Butcher Shops

Sixty-five samples of traditionally made fresh sausages obtained from retail shops and butcher shops in northem Greece were screened for the presence of Salmonella spp. and Listeria spp. Salmonella spp. were found in 20% of the samples tested (54% Salmonella typhimurium and 46% Salmonella enteritidis). The prevalence of Listeria spp. in the samples was 26% (12% Listeria monocytogenes, 76% Listeria innocua, and 12% Listeria welshimeri). Nine of 13 Salmonella isolates were found to be resistant to ampicillin and 4 of 13 showed intermediate sensitivity; 1 of 13 was found to be resistant to chloramphenicol and 1 of 13 to tetracycline. Two strains of Salmonella typhimurum were multiresistant (resistant to ampicillin, chloramphenicol, and norfloxacin). All Listeria isolates were sensitive to the antibacterial agents tested that are commonly used for the treatment of human listeriosis.

Sonophotocatalysis-mediated morphological transition modulates virulence and antibiotic resistance in Salmonella Typhimurium

2020 ◽  
Vol 6 (7) ◽  
pp. 1917-1930
Author(s):  
A. P. Habeeb Rahman ◽  
Ananyo Jyoti Misra ◽  
Swagatika Panda ◽  
Bhaskar Das ◽  
Prachi Bhol ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Antibiotic Resistance ◽  
Salmonella Typhimurium ◽  
Cell Formation ◽  
Morphological Transition

Oxidative stress induced by sublethal sonophotocatalysis causes spheroplast like cell formation and reduction in antibiotic resistance in Salmonella Typhimurium.

scholarly journals Prevalence and antibiotic resistance of Salmonella Enteritidis and Salmonella Typhimurium in raw chicken meat at retail markets in Malaysia

2016 ◽  
Vol 95 (8) ◽  
pp. 1888-1893 ◽  
Author(s):  
T.Y. Thung ◽  
N.A. Mahyudin ◽  
D.F. Basri ◽  
C.W.J. Wan Mohamed Radzi ◽  
Y. Nakaguchi ◽  
...  
Keyword(s):  
Antibiotic Resistance ◽  
Salmonella Typhimurium ◽  
Salmonella Enteritidis ◽  
Chicken Meat ◽  
Retail Markets
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