a temporal study of salmonella serovars from fluff samples from poultry breeder hatcheries in ontario between 1998 and 2008.the objectives of this study were to determine the prevalence of salmonella, trends, major serovars, and their clusters from fluff samples, in poultry hatcheries in ontario between 1998 and 2008. multi-level logistic regression modelling with random effects for hatchery and sampling visit (day on which samples were collected from a hatchery) was used to identify factors [poultry breeder type, year (trend), and season] associated with the prevalence of salmonella and a cluster detection test was ...201323814352
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