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Annual comparison of lungworm prevalence in harbour porpoises stranded along the North Sea coast of the German federal state Schleswig-Holstein between 2006 and 2018. The median of total deaths (19 ± 9.23, black line), uninfected cases (10 ± 6.83, dotted line) and positive cases (8 ± 5.04, dashed line) are additionally depicted.
