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A survey for maintenance of virulent newcastle disease virus-free area in poultry production in Brazil
(Brazilian Journal of Microbiology, 2010-06-01) [Artigo]
In 2003, Brazil was recognized as a pathogenic Newcastle Disease Virus (NDV) strain-free country for commercial poultry. This research was conducted in Brazil between December 2003 and March 2005 to verify the maintenance ...