Contagious between people and other vertebrates, both pets and wild animals. Contacts may contact the people from animals, or from animal to man it. Contact it must by nature.
Contagious between humans and other vertebrates. Both pets and wildlife The contact may be transmitted from animals to humans. Or from animal to man it. Contact must be innate.
Communicable diseases among people and other vertebrate Both pets and wildlife. Contact may contact from animals to people. Or from the people to the animal at all. Contact must be perfectly natural.