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Feline immunodeficiency virus (FIV)
Feline Leukemia Virus
Foot and Mouth Disease Virus
Foot and Mouth Disease Virus type A
Foot and Mouth Disease Virus type Asia 1
Foot and Mouth Disease Virus type O
Fowl adenovirus
Fowlpox Virus
Francisella tularensis
Fusarium
Fusobacterium nucleatum
Gallid Herpesvirus 1