WHO guidelines for oral vaccination of domestic dogs:
EU Commissions guidelines for oral vaccination of foxes:
EUROPEAN COMMISSION (2002). The oral vaccination of foxes against rabies. Report of the Scientific Committee on Animal Health and Animal Welfare, adopted 23 October 2002. European Commission, Health and Consumer Protection Directorate-General, Directorate C – Scientific Opinions, C2 – Management of Scientific Committees; Scientific Co-Operation and Networks.