WAkabane orthobunyavirus
WBlackleg (disease)
WBluetongue disease
WBrucellosis
WCandidiasis
WCaseous lymphadenitis
WChlamydia abortus
WCryptococcosis
WEchinococcus granulosus
WFacial eczema
WFainting goat
WFoot-and-mouth disease
WHaemonchus contortus
WInfectious necrotic hepatitis
WJaagsiekte sheep retrovirus
WLeptospirosis
WLouping ill
WMyiasis
WNeospora caninum
WNutritional muscular dystrophy
WOrf (disease)
WPasteurellosis
WPolioencephalomalacia
WQ fever
WRift Valley fever
WSalmonellosis
WSchmallenberg orthobunyavirus
WScrapie
WSheeppox
WSporotrichosis
WTularemia
WZygomycosis