NEWCASTLE DISEASE VACCINES SHOULD BE FURTHER PROBED – EFSA
May 1st, 2007
BY KEITH NUTHALLTHE EUROPEAN Food Safety Authority (EFSA) has warned better monitoring tests are required before it can confidently back using vaccinations to control key poultry killer Newcastle Disease. The problem is that present vaccines "do not permit a differentiation between the...response to vaccine and (the) field virus", when checking for any resulting immunity against Newcastle Disease. So, it is difficult to say when a flock has been protected against the pathogen. "The development of DIVA (Differentiating infected from Vaccinated animals) vaccines ...
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