title: Variations in the severity of phocid herpesvirus type 1 infections with age in grey seals and harbour seals.
abstract: The data recorded during an outbreak of phocid herpesvirus type 1 infection among 19 harbour seals and 29 grey seals being nursed in a seal rehabilitation centre in The Netherlands in 1998 were used, together with data from similar outbreaks in previous years, to compare the clinical signs observed in the two species at different ages. The severity of the disease was inversely correlated with age in the harbour seals, and the infected harbour seals generally developed more severe clinical signs than the infected grey seals.
authors.affiliation: Seal Rehabilitation and Research Centre, Pieterburen, The Netherlands.
authors.forename: B E E
authors.initials: BE
authors.lastname: Martina
authors.forename: T H
authors.initials: TH
authors.lastname: Jensen
authors.forename: M W G
authors.initials: MW
authors.lastname: van de Bildt
authors.forename: T C
authors.initials: TC
authors.lastname: Harder
authors.forename: A D M E
authors.initials: AD
authors.lastname: Osterhaus
mesh_terms: D000367:Age Factors; D000818:Animals; D004279:DNA, Viral / Q000032:analysis; D004196:Disease Outbreaks; D006566:Herpesviridae Infections / Q000453:epidemiology / Q000473:pathology* / Q000662:veterinary*; D009426:Netherlands / Q000453:epidemiology; D016133:Polymerase Chain Reaction / Q000662:veterinary; D046048:Seals, Earless / Q000821:virology*; D012720:Severity of Illness Index
chemical_list: D004279:DNA, Viral