Table 1. Macroscopic findings observed in submitted necropsied lambs (n = 433) from 86 Dutch sheep flocks with a suspected SBV-infection.

Malformation	Number of lambs	Percentage
External skeleton
Arthogryposis fore limbs	321	74.1%
Arthogryposis hind limbs	295	68.1%
Scoliosis	182	42.0%
Microcephaly	156	38.1%
Torticollis	128	29.6%
Kyphosis	123	28.4%
Brachygnathia inferior	49	11.3%
Lordosis	15	3.5%
Central nervous system
Hypoplasia cerebellum	297	68.6%
Hypoplasia spinal cord	197	45.5%
Hypoplasia cerebrum	161	37.2%
Hydranencephaly	70	16.2%
Hypoplasia brainstem	30	6.9%