The Immunization Information System (IIS) is operated on which level?

The Immunization Information System (IIS) operates primarily at the state level. Each state in the U.S. manages its own IIS to track immunization records for residents. This system is essential in promoting public health by ensuring accurate immunization tracking, which helps prevent outbreaks of vaccine-preventable diseases.

The state-level operation means that the IIS is tailored according to state laws, regulations, and population needs, allowing for effective management of immunization data specific to that area. States are responsible for the collection, reporting, and sharing of immunization data with healthcare providers, patients, and public health entities. This focus allows states to enforce immunization mandates and enhance public health strategies effectively.

The other levels mentioned, such as federal and local, do not typically manage IIS directly, although they may provide support or guidelines. An international level is also not relevant since health policies and immunization tracking systems are generally handled on a national or sub-national basis, reflecting local healthcare infrastructure and regulatory frameworks.