Immunization Information Systems

Immunization Information Systems (IIS) are secure digital databases that track and store individuals’ vaccination records. They help healthcare providers, public health officials, and patients access accurate, up-to-date information about which vaccines have been received, when, and for whom. This ensures better coordination of immunizations, reduces duplicate shots, and supports efforts to monitor vaccine coverage and safety across populations. IIS are important tools in managing public health, especially during large-scale vaccination campaigns or pandemics, by providing a comprehensive and reliable way to oversee immunization histories in a community.