Recently, the theory of the Newcastle 7 genome epidemic in poultry has become popular, and some people affiliated with the poultry pathologist claim that the currently available vaccines do not give the required immunity against this virus (G7) and market vaccines on the basis that they protect birds from this variant . The other point is that the G7 theory appeared when Newcastle disease spread in many countries in countries such as Malaysia, Indonesia and Korea in herds vaccinated against this disease, and here I confirm that the percentage of infection and losses due to Newcastle disease depends entirely on the level of immunity in the herd and the level of immunity depends on the single dose standard in the illness , Hence, they found that a change in the genetic composition or in other words the genetic sequence is the cause of the spread of the disease in the attached herds, and the theory of genome 7 appeared and some began drumming for this topic .
If we assume that this claim has some validity, it would have been worth studying the topic by conducting a virus neutralization test or plaque reduction test on the tissue transplantation community .if a difference is proven between the alleged adenoma and the vaccine available all over the world, we have another talk.
The basic structure of the Newcastle virus is stable, although there are slight antigenic differences between isolates, but it has no effect on the level of immunity resulting from the existing vaccine
The bottom line for those concerned about poultry is not to listen to the G7 theory and that all vaccines are effective against this disease and the level of immunity depends on the vaccine, its efficiency and the vaccine program produced.
Dr.Fouad al-sheikhli
