Nosema apis was the historic species infecting A. mellifera honey bee, causing nosema disease.

Stonebrood is caused by Aspergillus flavus and Aspergillus fumigatus and affects both the brood and adult bees.

Grasserie is caused by a virus called Borrelina.

Pébrine, or "pepper disease," is a disease of silkworms, which is caused by protozoan microsporidian parasites, mainly Nosema bombycis.

Newcastle disease is a contagious viral bird disease affecting many domestic and wild avian species; caused by a genus of Paramyxovirus.