Hello doctor,
Your statement is correct as a general principle, but in diagnosis and treatment, very accurate and detailed information is needed, and it is not possible to examine and solve all problems with a general principle (even if it is correct).
For example, should vaccination be done or delayed for a herd that is involved in severe enteritis and losses and it is time for the Newcastle vaccine?!
But do you also apply this example to the herd affected by Newcastle disease?! The severity of the disease, blood titer, general health, death rate, stage of the disease, necropsy symptoms are reviewed and analyzed by the veterinarian and it is determined which strain of vaccine should be administered to the herd with what method of administration or not at all. Administering a live vaccine to the herd infected with Newcastle disease is one of the effective methods. But I said that its use or non-use requires compliance with the above-mentioned issues. I used it many times in the flock of broiler chickens and broilers according to the recommendation of a veterinarian colleague, and it was very helpful. In the case of ostrich, I used it in the early stages of the disease and it was very effective.
But is this the case with all viral diseases?!
Therefore, the issues are very specialized and complex, especially on an industrial scale where maximum productivity is the goal.
This post is written by ShahabiR1367