A cross-sectional study of Salmonella in pre-slaughter pigs in a production compartment of northern Thailand

Dorn‐In, Samart; Fries, R.; Padungtod, Pawin; Kyule, M.N.; Baumann, Maximilian; Srikitjakarn, Lertrak; Chantong, Wasan; Sanguangiat, A.; Zessin, Karl-Hans

doi:10.1016/j.prevetmed.2008.06.022

Cited by 20 publications

(20 citation statements)

References 28 publications

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“…These serovars were also present in the environment before the cutting process, with Salmonella Rissen being the most prevalent serotype in the cutting environment, possibly being transmitted directly from the pigs. Padungtod and Kaneene (2006) and Dorn-in et al (2009) have found that Salmonella Rissen is the most common serotype found in pigs and the environment of pig farms, whereas Salmonella Derby, which is also associated with pigs in Thailand (Bangtrakulnonth et al, 2004), has not been detected in our study.…”

contrasting

confidence: 68%

“…A comprehensive quality safety and assurance scheme, such as Hazard Analysis Critical Control Point or Good Manufacturing Practice, which also includes staff educational programs, should help to increase the level of awareness of food hygiene at the farm and abattoir level even more effectively (Borch et al, 1996;Legnani et al, 2004;van der Gaag et al, 2004). The risk of contamination of pork and pork products might depend on highly contaminated pigs at the preharvest stage (Dorn-in et al, 2009) and at the slaughtering stage (Chantong, 2005). Our results show the effects of postharvest processing on the retail product.…”

Section: Discussionmentioning

confidence: 99%

“…For the pig herds, sample size was calculated as described by Dorn-in et al (2009) to determine overall prevalence and to determine within-herd prevalence. For this calculation, a Salmonella prevalence of 55% as shown by Patchanee et al 1 (2002) was assumed.…”

Section: Methodsmentioning

confidence: 99%

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A Cross-Sectional Study of Salmonella in Pork Products in Chiang Mai, Thailand

Sanguankiat

Pinthong

Padungtod

et al. 2010

Foodborne Pathogens and Disease

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The occurrence of Salmonella in food of animal origin in Chiang Mai province was investigated by using a cross-sectional study during several phases of the pork production chain (cutting, transport, and retail) and of the environment in the cutting unit of a slaughterhouse. In total, 173 pork samples were obtained during the cutting phase, 173 samples from transported pork, 200 samples from retail products, and 300 samples from the slaughterhouse environment. Salmonella was detected in 55.5% of freshly cut pork, 70.5% of transported pork, and 34.5% of retail products. The five most prevalent Salmonella serotypes identified were Rissen (45.3%), Typhimurium (16.3%), Krefeld (10.6%), Stanley (6.3%), and Lagos (6.0%). Carcass contamination prior to cutting and in the slaughterhouse environment appeared to be important sources of Salmonella in transported pork and retail products. As Salmonella was also found during early stages of the slaughter process, attention should focus on all stages of the pork production chain to reduce contamination level and consumer risk of infection.

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contrasting

confidence: 68%

Section: Discussionmentioning

confidence: 99%

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A Cross-Sectional Study of Salmonella in Pork Products in Chiang Mai, Thailand

Sanguankiat

Pinthong

Padungtod

et al. 2010

Foodborne Pathogens and Disease

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“…This serovar accounted for 1.9% (n ϭ 64) of salmonellosis cases in 1993 and 10.1% of cases (n ϭ 141) in 2003 (23). Salmonella serovar Stanley is a serovar generally associated with pig and pork production but is neither host restricted nor host adapted (16,33).…”

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confidence: 99%

Characterization of Isolates of Salmonella enterica Serovar Stanley, a Serovar Endemic to Asia and Associated with Travel

et al. 2012

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Salmonella enterica serovar Stanley (S. Stanley) is a common serovar in Southeast Asia and was the second most common serovar implicated in human salmonellosis in Thailand in the years 2002 to 2007. In contrast, this serovar is relatively uncommon in Europe. The objective of this study was to characterize a collection of S. Stanley strains isolated from Thai (n ‫؍‬ 62), Danish (n ‫؍‬ 39), and French (n ‫؍‬ 24) patients to gain a broader understanding of the genetic diversity, population dynamics, and susceptibility to antimicrobials. All isolates were characterized by pulsed-field gel electrophoresis and antimicrobial susceptibility testing. The molecular mechanisms of resistance to extended-spectrum cephalosporins and plasmid-mediated resistance to quinolones were characterized by PCR and sequencing. Plasmid profiling, replicon typing, and microarray analysis were used to characterize the genetic mechanisms of antimicrobial resistance in 10 extended-spectrum cephalosporinase-producing isolates. Considerable genetic diversity was observed among the isolates characterized with 91 unique XbaI pulsed-field gel electrophoresis (PFGE) patterns, including 17 distinct clusters consisting of two to seven indistinguishable isolates. We found some of the S. Stanley isolates isolated from patients in Europe were acquired during travel to Southeast Asia, including Thailand. The presence of multiple plasmid lineages carrying the extended-spectrum cephalosporinase-encoding bla CMY-2 gene in S. Stanley isolates from the central part of Thailand was confirmed. Our results emphasize that Thai authorities, as well as authorities in other countries lacking prudent use of antimicrobials, should improve the ongoing efforts to regulate antimicrobial use in agriculture and in clinical settings to limit the spread of multidrug-resistant Salmonella isolates and plasmids among humans and pigs in Thailand and abroad.

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“…In 2006, Padungtod and Kaneene [30] reported that the prevalence of Salmonella isolation from pre-slaughter pigs (6%) and chickens (4%) was at a low level in Thailand. However, serological testing of the pigs yielded a much higher sero-prevalence (60%) [16,33], suggesting that pigs may be exposed to Salmonella during the raising period, but that they may not shed the bacteria at the farms. However, when pork and chicken meat samples were collected from the same area during the same period of time, the prevalence of Salmonella contamination in both pork and chicken meat increased significantly [30].…”

Section: Epidemiology Of Selected Foodborne Bac-teriamentioning

confidence: 99%

Livestock Production and Foodborne Diseases from Food Animals in Thailand

Padungtod

Kadohira

Hill

2008

The Journal of Veterinary Medical Science

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ABSTRACT. Thailand is a developing nation dependent on agriculture. Due to lack of modern public health practices, she suffers from the consequences of foodborne illnesses. The number of foodborne infection cases has nearly doubled in the past 10 years. Salmonella and Campylobacter pose the greatest risk of bacterial contaminants, mostly from pigs and chickens, and this paper will review livestock production systems and foodborne diseases from cases stemming from these sources. Due to the complexity of the livestock production systems, collection of data to date has been sporadic, but it is clear that controls are needed in slaughterhouse processing methods, and more communication between agencies and surrounding regions is paramount for proper surveillance to have any significant effect.

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A cross-sectional study of Salmonella in pre-slaughter pigs in a production compartment of northern Thailand

Cited by 20 publications

References 28 publications

A Cross-Sectional Study of Salmonella in Pork Products in Chiang Mai, Thailand

A Cross-Sectional Study of Salmonella in Pork Products in Chiang Mai, Thailand

Characterization of Isolates of Salmonella enterica Serovar Stanley, a Serovar Endemic to Asia and Associated with Travel

Livestock Production and Foodborne Diseases from Food Animals in Thailand

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