Aladár Aujeszky (11 January 1869 Pest – 9 March 1933 Budapest) was a Hungarian veterinary pathologist, professor of bacteriology and microbiologist, noted for his work on pseudorabies. Pseudorabies (also known as PRV, Aujeszky's disease, infectious bulbar paralysis, or mad itch), is caused by a virus with icosahedral symmetry and belongs to the subfamily Alphaherpesvirinae within the family Herpesviridae. This subfamily has a wide host range and attacks the peripheral nervous system of the host. It was first described in 1813 in a situation where cattle and pigs shared a stable. In 1909 Weiss