Within-host evolution and immigration of Escherichia coli in the human gastrointestinal tract
Several studies have shown that when a human host harbours two or more strains of E. coli, the second strain is significantly more likely to be a member of the same phylogroup than to be a member of a different phylogroup. Such an outcome may be the consequence of a within host evolution event or due an independent immigration/establishment event. To determine the relative importance of these two types of events in determining E. coli diversity in a host, a large collection of E. coli that...[Show more]
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