Answers are grounded in this paper and cite their sources.
The frequency of human infection caused by certain Yersinia subgroups might be related to the frequency of exposure to specific animal sources. In contrast, non-pathogenic Yersinia were commonly isolated from foodstuffs and the environment, most probably accounting for the abundance of non-pathogenic Yersinia recovered from human stools.
No takes yet. Share an insight, caveat, or question.
Guern et al. (2016) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: