Acholeplasma laidlawii

Aeromonas salmonicida

African Horse Sickness Virus

African swine fever virus

Aleutian Disease Virus

All Ehrlichia species

All Encephalitozoon species

All Mycoplasma Species

Anaplasma centrale

Anaplasma phagocytophilum

Anaplasma platys

Aspergillus all species