Prevalence and Antimicrobial Resistance of Salmonella Isolated from Blood Cockles in Surat Thani Province, Thailand


  • jirawat Mala Faculty of Science and Technology, Suratthani Rajabhat University
  • Pakavadee Rakthong Faculty of Science and Technology, Suratthani Rajabhat University, Surat Thani



Prevalence, Salmonella, Antimicrobial resistance, Blood cockles, Surat Thani province


This study was undertaken to investigate the prevalence and antimicrobial resistance of Salmonella in natural blood cockles from Surat Thani province. The research samples were collected from different areas over two seasons, dry and wet, in 2021. VIDAS® and VITEK® 2 compact systems were used for automated analysis. The results revealed that the prevalence of Salmonella was only found in the dry season, April (20%, 4 out of 20 samples) while all areas were not found Salmonella in the wet season. Antimicrobial resistance was evaluated in Salmonella strain isolated (n=8) and found that this pathogen was most frequently observed for amikacin (6/8, 75%), cefalotin (8/8, 100%), doxycycline (8/8, 100%), gentamicin (8/8, 100%) and tetracycline (8/8, 100%) with showed the minimum inhibitory concentration (MICs) were ≥2, ≥2, ≥16, ≥1 and ≥16 µg/ml, respectively. The six isolates demonstrated multiple drug resistance (MDR). This study provided useful information for the assessment of the possible risk posed to consumers, which has a significant public health impact in Thailand.


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Srisunont C, Nobpakhun Y, Yamalee C, Srisunont T. Influence of seasonal variation and anthropogenic stress on blood cockle (Tegillarca granosa) production potential. J Fish Environ 2020; 44(2): 62-83.

Soegianto A, Putranto TWC, Lutfi W, Almirani FN, Hidayat AR, Muhammad A, et al. Concentrations of metals in tissues of cockle Anadara granosa (Linnaeus, 1758) from East Java Coast, Indonesia and potential risks to human health. Int J Food Sci 2020; 1-9.

Mudadu AG, Spanu C, Pantoja JCF, Dos Santos MC, De Oliveira CD, Salza S, et al. Association between Escherichia coli and Salmonella spp. food safety criteria in live bivalve molluscs from wholesale and retail markets. Food Control. 2022; 137: 1-8.

Zhang J, Yang X, Kuang D, Shi X, Xiao W, Zhang J, et al. Prevalence of antimicrobial resistance of non-typhoidal Salmonella serovars in retail aquaculture products. Int J Food Microbiol 2015; 210: 47-52.

Atwill ER, Jeamsripong S. Bacterial diversity and potential risk factors associated with Salmonella contamination of seafood products sold in retail markets in Bangkok, Thailand. PeerJ 2021; 9: e12694.

Acheson D, Hohmann EL. Nontyphoidal Salmonellosis. Clin Infect Dis 2001; 32(2): 263-9.

Surat Thani Provincial Public Health Office. Epidemiological surveillance report form (Report 506): Individual report. Surat Thani: Surat Thani Provincial Public Health Office; 2020.

Giacometti F, Pezzi A, Galletti G, Tamba M, Merialdi G, Piva S, et al. Antimicrobial resistance patterns in Salmonella enterica subsp. enterica and Escherichia coli isolated from bivalve molluscs and marine environment. Food Control. 2021; 121: 1-9.

Maka L, Maćkiw E, Sciezynska H, Pawłowska K, Popowska M. Antimicrobial susceptibility of Salmonella strains isolated from retail meat products in Poland between 2008 and 2012. Food Control. 2014; 36(1): 199-204.

Thai meteorological department. Graph of rain accumulation. [Internet] 2022 [cited 2022 Dec 12]. Available from: AccumRain.pdf

Clinical and Laboratory Standards Institute. Performance standards for antimicrobial disk susceptibility tests; approved standard M100-S25. Wayne, PA: Clinical and Laboratory Standards Institute; 2015.

Woodring J, Srijan A, Puripunyakom P, Oransathid W, Wongstitwilairoong B, Mason C. Prevalence and antimicrobial susceptibilities of Vibrio, Salmonella and Aeromonas isolates from various uncooked seafoods in Thailand. J Food Prot 2012; 75(1): 41-7.

Wattayakorn G, Prapong P, Noichareon D. Biogeochemical budgets and processes in Bandon Bay, Suratthani, Thailand. Journal of Sea Research 2001; 46(2): 133-142.

Wiriyaakaradecha S, Somridhivej B, Chuchird N. Antimicrobial resistance and antimicrobial residue in culture of Nile Tilapia (Oreochromis niloticus) in Ubon Ratchathani and Chiang Rai province. E-THAI FISHERIES GAZETTE 2018; 1(3): 18-33.

Mengist A, Mengistu G, Reta A. Prevalence and antimicrobial susceptibility pattern of Salmonella and Shigella among food handlers in catering establishments at Debre Markos University, Northwest Ethiopia. Int J Infect Dis 2018; 75: 74-9.

Novoa-Rama E, Bailey M, Kumar S, Leone C, den Bakker HC, Thippareddi H, et al. Prevalence and antimicrobial resistance of Salmonella in conventional and no antibiotics ever broiler farms in the United States. Food Control 2022; 135: 1-10.

Phumart P, Phodha T, Thamlikitkul V, Riewpaiboon A, Prakongsai P, Limwattananon S. Health and economic impacts of antimicrobial resistant infections in Thailand: a preliminary study. J of Health Systems Research 2012; 6: 352-359.

Duangjan C, Choengthong S. A study of supply chain management of bivalve entrepreneurs: a Bandon Bay, Surat Thani. Journal of International Studies 2020; 10(2): 46-67.




How to Cite

Mala jirawat, Rakthong P. Prevalence and Antimicrobial Resistance of Salmonella Isolated from Blood Cockles in Surat Thani Province, Thailand. Health Sci J Thai [Internet]. 2023 Feb. 28 [cited 2023 Dec. 10];5(2):48-56. Available from:



Original articles