Prevalence of equine herpesvirus types 2 and 5 in horse populations by using type-specific PCR assays Ann Nordengrahn, Malik Merza, Carlos Ros, Arne Lindholm, Vilmos Pálfi, Duncan Hannant and Sándor Belák Vet. Res., 33 3 (2002) 251-259 DOI: 10.1051/vetres:2002013