Deaths in young ducklings associated with infestations of the nasal cavity with leeches.
D000818:Animals; D001717:Birds; D003141:Communicable Diseases; D004372:Ducks; D007865:Leeches; D008460:Meat; D009296:Nasal Cavity; D010272:Parasitic Diseases; D011200:Poultry
FOWLS; LEECHES