Newcastle disease control: LaSota or cloned vaccines ...
2021-7-15 · According to the OIE, Newcastle disease is defined as an infection of birds caused by a virus of avian paramyxovirus serotype 1 (APMV-1) that meets one of the following criteria for virulence: a) The virus has an intracerebral pathogenicity index (ICPI) in day-old chicks (Gallus Gallus) of 0.7 or greater. or
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