Answer:
– Natural exposure to infectious agent stimulates your own B cells to produce antigen-specific antibodies – Artificial immunization (vaccination) with key antigens or epitopes from an infectious agent does the same thing – Active immunization results in immunologic memory (more vigorous response next time)
Explanation:
Answer:
Most often, food is contaminated by infected food handlers. Food may also be contaminated if it is grown in or irrigated with water contaminated with norovirus, as has been shown with oysters, lettuce, and raspberries.
Explanation:
