leucocytozoonosis

noun

leu·​co·​cy·​to·​zoo·​no·​sis -ˌzō-ə-ˈnō-səs 

plural leucocytozoonoses -ˌsēz 

: a disease caused by infection of birds (as turkeys, chickens, ducks, and geese) by sporozoans of the genus Leucocytozoon transmitted by arthropods (as blackflies)