. Activities handbook. Veterinary medicine. 1947-59 78 Flocks 21 States. Fiscal Year NE9CO(rO)-sl29 Cooperative scrapie eradication The cooperative eradication proj^ram is based on procedures long used to eradicate other diseases, with modifications required by the unusual nature of scrapie. Prompt report- ing of suspicious cases is stressed. Tentative clinical diagnosis is confirmed by histopathological studies of brain tissues. Sus- pect animals are maintained under observation and are slaughtered until symptoms are fully developed. Scrapie in other countries In August 1959, the Canadian Scr
. Activities handbook. Veterinary medicine. 1947-59 78 Flocks 21 States. Fiscal Year NE9CO(rO)-sl29 Cooperative scrapie eradication The cooperative eradication proj^ram is based on procedures long used to eradicate other diseases, with modifications required by the unusual nature of scrapie. Prompt report- ing of suspicious cases is stressed. Tentative clinical diagnosis is confirmed by histopathological studies of brain tissues. Sus- pect animals are maintained under observation and are slaughtered until symptoms are fully developed. Scrapie in other countries In August 1959, the Canadian Scrapie eradi- cation program was broadened so that Canada and the United States, whose regulatory offi- cials had worked closely, now have equivalent programs. Canadian oflficials have given assur- ance that sheep which would have been slaugh- tered under the current program, had it been in eff'fct in April 1957, will not be certified for export to the United States. Australia and New Zealand—where it is be- lieved scrapie had been newly introduced by imported sheep—also instituted an eradication program. Officials in both countries believe their efforts to eradicate scrapie have been suc- cessful. One outbreak among imported sheep in Norway is l)eing similarly handled. In certain countries where .scrapie is en- demic, owners attempt to reduce the incidence of the disease and the .stigma of having an in- fected Hock by slaughtering selected animals of certain bloodlines. These do not represent or- ganized efforts to eradicate the disease. Infected flocks and source flocks are quaran- tined. All .sheep and goats in such flocks are slaughtered under supervision at authorized slaughtering plants. animals moved from these flocks and their immediate progeny are slaughtered. and vehicles are cleaned and disinfected. Principles of eradication Research efforts to produce a vaccine to in- crease resistance have been discouraging. If either breed resistance or indiv
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