Salmonella spp. remains the most significant foodborne pathogen in south Brazil, but its epidemiology tends to change over time. Using official and surrogate data, a microbial subtyping model attributed different Salmonella serovars to laying hens, pigs, broilers, and turkeys from 2005 to 2015 in Rio Grande do Sul (RS). Additional to the subtyping model, three sub-analyses of outbreak data attributed Salmonella spp. in humans to animal and non-animal food. Laying hens/eggs was the most important source of human salmonellosis in RS, with almost 40% (159 cases; 95% credibility interval, 43–247) attribution proportion, followed by pigs reared in Santa Catarina, a neighbor state (34.5%). The Salmonella serovars Enteritidis and Typhimurium were the most common serovars involved. Source-related parameters had wide credibility intervals but showed a higher risk of illness from contaminated eggs than from the other three animal-food sources. Analysis of the outbreak data corroborated the findings and indicated signs of decreasing importance for eggs and increasing importance for pork consumption.

沙门氏菌属。仍然是巴西南部最重要的食源性病原体，但其流行病学趋势会随着时间而改变。利用官方和替代数据，微生物分型模型将2005年至2015年南里奥格兰德州（RS）的沙门氏菌血清型归因于产蛋鸡，猪，肉鸡和火鸡。除子类型模型之外，还对爆发数据的三个子分析归因于沙门氏菌。在人类中以动物和非动物性食物为主。产蛋鸡是产蛋鸡沙门氏菌病最重要的来源，其归因比例接近40％（159例；可信区间为95％，43-247），其次是在邻国圣卡塔琳娜州饲养的猪（34.5％） 。该沙门氏菌血清型肠炎和伤寒是最常见的血清型。与源相关的参数具有较高的可信度区间，但是与其他三种动物源相比，受污染的鸡蛋显示出更高的患病风险。对爆发数据的分析证实了这一发现，并表明了对鸡蛋重要性下降和对猪肉消费重要性上升的迹象。