Arenaviruses are a type of small virus commonly found in rodents. When a person becomes infected with an arenavirus, symptoms usually begin within 10 days.
Smallpox was a systemic disease, officially eradicated since 1979 (WHO), caused by infection with the Variola major virus, whose only reservoir was infected humans.
Rabies is a disease caused by rabies virus (a Lyssavirus). Every year, a small number of cases of rabies is reported in Europe - travel-related or autochthonous.