The Immunization Action Coalition (IAC), a 501(c)3 nonprofit organization, works to increase immunization rates and prevent disease by creating and distributing educational materials for health professionals and the public that enhance the delivery of safe and effective immunization services. The coalition also facilitates communication about the safety, efficacy, and use of vaccines within the broad community of patients, parents, health care organizations, and government health agencies that share an interest in immunization. IAC receives financial support from a variety of sources, including individual member contributions, the federal government, professional organizations, and unrestricted educational grants from pharmaceutical companies.