Lack of immunization, what would be a example for that?
Please help

-Some vaccines cause a temporary headache, fatigue or loss of appetite. Rarely, a child might experience a severe allergic reaction or a neurological side effect, such as a seizure. Although these rare side effects are a concern, the risk of a vaccine causing serious harm or death is extremely small.

- Immunization is a simple and effective way of protecting yourself and your family. Immunization works by triggering the immune system to fight against certain diseases. If a vaccinated person comes in contact with these diseases, their immune system is able to respond more effectively.

Explanation:

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