Question

Why is the vaccine against newcastle diasease not marketed?

Answer 1

The vaccine against Newcastle disease is not marketed because it is unsafe. It killed 32% of line chicks and 10% of vaccine Lohmann (VALO) chicks using the maximum recommended dose that infected about 40% of the embryos. 

Answer 2

Answer:

The vaccine against Newcastle disease is not marketed because it is unsafe. It killed 32% of line chicks and 10% of vaccine Lohmann (VALO) chicks using the maximum recommended dose that infected about 40% of the embryos.