Step 1 : Introduction to the question "9. Which of the following would be a vaccine-, animal-, or management - related reason for failure of protection against disease in a vaccinated animal?"
...1. Vaccination when passive, colostral antibodies are present 2. Inappropriate vaccine storage 3. All of these 4. Poor vaccine response in a sick or stressed animal Another reason is overwhelming exposure to an infectious organism.
Step 2 : Answer to the question "9. Which of the following would be a vaccine-, animal-, or management - related reason for failure of protection against disease in a vaccinated animal?"
All of these:
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