Which of the following is correct regarding vaccines to prevent Salmonella enteritidis in poultry?

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Multiple Choice

Which of the following is correct regarding vaccines to prevent Salmonella enteritidis in poultry?

Explanation:
Vaccination against Salmonella enteritidis works best when you use vaccines that fit the immune needs at different ages of the birds. A live attenuated vaccine given to day-old chicks stimulates the gut’s mucosal immune system, helping to prevent intestinal colonization and reduce shedding if exposure occurs. This early mucosal protection is crucial because the gut is the main reservoir for Salmonella in poultry. A killed (inactivated) vaccine given to laying hens boosts the systemic antibody response, which helps limit Salmonella in the bloodstream and reproductive tissues, and lowers the risk of contamination of eggs and the environment through shedding. By combining these two approaches, you get protection at the gut level in youngsters and systemic protection in adults, covering multiple routes and stages of infection. That combination is why using both vaccine types is the best approach.

Vaccination against Salmonella enteritidis works best when you use vaccines that fit the immune needs at different ages of the birds. A live attenuated vaccine given to day-old chicks stimulates the gut’s mucosal immune system, helping to prevent intestinal colonization and reduce shedding if exposure occurs. This early mucosal protection is crucial because the gut is the main reservoir for Salmonella in poultry.

A killed (inactivated) vaccine given to laying hens boosts the systemic antibody response, which helps limit Salmonella in the bloodstream and reproductive tissues, and lowers the risk of contamination of eggs and the environment through shedding. By combining these two approaches, you get protection at the gut level in youngsters and systemic protection in adults, covering multiple routes and stages of infection.

That combination is why using both vaccine types is the best approach.

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