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  • Title: Evolving perception on the benefits of vaccination as a foot and mouth disease control policy: contributions of South America.
    Author: Bergmann IE, Malirat V, Falczuk AJ.
    Journal: Expert Rev Vaccines; 2005 Dec; 4(6):903-13. PubMed ID: 16372885.
    Abstract:
    Within the past decade, changes in perceptions on the benefits of vaccination as an appropriate tool to achieve complete foot and mouth disease eradication have become evident. The former negative view was derived from misconceptions, resulting mainly from the belief that vaccines are not entirely effective and that vaccination masks asymptomatic viral circulation. The advent in the 1990s of vaccination policies implemented within a strategic eradication plan in South America, and during recurrence of the disease in disease-free regions contributed towards generating more reliable and visible outcomes of vaccination programs, paving the way towards a new perception. Particularly relevant was the development and application of novel serodiagnostic approaches to assess silent viral circulation, irrespective of vaccination. The use in South America of vaccination allied to serosurveys to accompany viral clarification during eradication campaigns and after emergencies clearly established the importance of this control tool to stop the spread of viral infection. This alliance gave input to break many myths associated with the use of vaccines, including the belief that immunized carrier animals pose an epidemiologic risk. This experience launched new concepts that supported the internationally recognized status of foot and mouth disease-free regions with vaccination and the 'vaccination to live' policy as an alternative to 'stamping out'.
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