Antimicrobial Resistance of Salmonella spp. Isolated from Workers and Pigs from Farms in Northeastern Thailand

Salmonella is a major food safety hazard applied to one health. Salmonella infection in pig farms may lead to health problems for farm workers, visitors and consumers of farm produce. In this study, prevalence of Salmonella spp. isolated from workers and pigs at farms at Nong-BuaLumphu province, Northeastern of Thailand was determined and antimicrobial susceptibility was assessed.

A total of 123 samples from workers and pigs were collected during April 2012 to September 2013. Thirty-nine were from workers and 84 were from pigs from the farms, Northeastern Thailand. All samples were examined for Salmonella spp. isolation and identification by ISO 6597:2002. The prevalence of antimicrobial resistance patterns was assessed using disk diffusion technique among 10 antimicrobials.

Percentage of Salmonella contaminated to workers and pigs were 28.2 and 32.2, respectively. Identified serovars from workers were S. Weltevreden (18.2%), S. Stantey (18.2%), S. Panama (18.2%), S. Muenchen (18.2%), S. Derby (9.1%), S. Vagesak (9.1%) and S. Give (9.1%); from pigs were S. Rissen (33.3%), S. Panama (18.5%), S. Stantey (11.5%), S. Kedougou (11.1%), S. Typhimurium (11.1%), S. Hindmarsh (3.7%), S. Gaminara (3.7%), i.4,5,12:i:- (3.7%), S. Gloucester (3.7%), S. Bareilly (3.7%,) and S. Eastbourne (3.7%). Salmonella isolated from workers and pigs that are highly resistant to Ampicillin were 63.6% and 81.5%, respectively.

Contamination of Salmonella spp. isolated from workers and pigs may be due to improper sanitation and hygienic management of the farms, or bad personal hygiene practice of the workers. The key principles for control and prevention of Salmonella spp. contaminated to pigs are standard farm management, sanitation management and good personal hygiene, so that food products derived from pigs will be undoubtedly safe for human consumption.

Disclosure of Interest: None Declared.