Final answer:
Immunization records must be kept permanently as they are important for tracking an individual's immunization history and ensuring public health.
Step-by-step explanation:
The type of record that must be kept permanently is Immunization records. These records are important for tracking an individual's immunization history and ensuring that they are up to date on their vaccinations.
Immunization records are crucial for public health purposes, as they help prevent the spread of diseases and ensure that individuals are protected against potential outbreaks.
By keeping immunization records permanently, healthcare providers and authorities can easily access and verify a person's immunization status when necessary.