title: The walrus and the carpenter were walking close at hand.
authors.affiliation: Karolinska Institute, Department of Epidemiology, Smittskyddsinsitutet, SE- 171 82 Solna, Sweden.
authors.forename: Johan
authors.initials: J
authors.lastname: Giesecke
mesh_terms: D000820:Animal Diseases / Q000635:transmission*; D000818:Animals; D018562:Disease Transmission, Infectious / Q000517:prevention & control / Q000662:veterinary; D006801:Humans; D011634:Public Health / Q000639:trends; D012307:Risk Factors; D015047:Zoonoses