Animals 2 Article 2 Atlantic Ocean Bird Diseases 2 Brazil 2 DNA sequence 2 Disease Outbreaks 2 Genetic Variation 2 Herpes simplex virus 1 2 Herpes simplex virus 2 2 Herpesviridae 2 Magellanic penguin 2 Magellanic penguin herpesvirus 1 2 Magellanic penguin herpesvirus 2 2 Phylogeny 2 Polymerase Chain Reaction 2 South America 2 South American tern 2 Spheniscidae 2 animal animal cell 2 asymptomatic disease 2 biological monitoring 2 brown boobies 2 classification 2 controlled study 2 disease surveillance 2 electron microscopy 2 epidemic 2 genetic variability 2