Salmonella geneslinked to antibiotic resistance

Investigators isolated 90 salmonella strains from food and human clinical samples, focusing on the serovar S. Typhimurium. Using whole genome sequencing at the U.S. Food and Drug Administration, scientists measured antibiotic resistance in each of the 90 strains. According to the study, 65 (72.2 percent) of the strains proved resistant to sulfonamides, 44 (48.9 percent) to streptomycin, 27 (30 percent) to tetracycline, 21 (23.3 percent) to gentamicin and seven (7.8 percent) to ceftriaxone, a cephalosporin antibiotic. According to study co-author Fernanda Almeida, a biomedical scientist at the university's Ribeirão Preto School of Pharmaceutical Sciences, S. Typhimurium remains one of the main serovars isolated from humans, animals and food in Brazil and worldwide.