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. 2018 Mar 5;8:4023. doi: 10.1038/s41598-018-22458-8

Figure 4.

Figure 4

Frequency distribution of the prevalence of infestation with L. salmonis on out-migrating Chum salmon in Muchalat Inlet, BC, from 2007 to 2016. Each observation is a unique combination of wild site-year-month (n = 280). The black bar represents the number of zero prevalences (n = 185).