List A diseases are defined by the World organisation for animal health (Office International des Epizooties, OIE, located in Paris) as transmissible diseases which:

have the potential for very serious and rapid spread, irrespective of national borders;
are of serious socio-economic or public health consequence;
are of major importance in the international trade of animals and animal products.

http://www.agriculture.de/acms1/conf6/ws5beclista.htm

Definition :
Reportable diseases are diseases considered to be of great public health importance. Local, state, and national agencies (for example, the U.S. Centers for Disease Control and Prevention) require that such diseases be reported when they are diagnosed by doctors or laboratories.
http://www.medhelp.org/medical-information/show/1454/Reporta...
http://www.nlm.nih.gov/medlineplus/ency/article/001929.htm

http://uk.search.yahoo.com/search;_ylt=A03uv8OmHphLzTABQHBLB...

Alternative Names
Notifiable diseases.

Reportable Diseases A-Z: Reportable Infectious Diseases
-the list-->
http://www.health.state.mn.us/divs/idepc/dtopics/reportable/...

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Note added at 2 hrs (2010-03-10 23:03:22 GMT)
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http://uk.search.yahoo.com/search?p=reportable disease +anim...