An IIS is a state-run database on the number of people vaccinated within the population. Each state has a separate immunization department that oversees this information collection. Private healthcare companies and providers are mainly responsible for administering the vaccine. The public health department will need to collect immunization data from vaccine administration and organize these records into a single database. Each record may contain supplementary information about the patient, including their age, race, gender, and location.
The department overseeing the IIS will send an immunization report to public health agencies at the federal, state, and local levels. Officials will use this information to implement an effective response to reduce infection rates within the local population.