Some transmissible animal diseases do not easily spread to other animals or to humans and thus do not cause economic or biodiversity damage on a wide scale.
Ní leathann roinnt galar in-tarchurtha ainmhithe go héasca go hainmhithe ná go daoine eile agus ar an gcaoi sin ní dhéanann siad dochar eacnamaíoch ná bithéagsúlach ar scála leathan.