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CDC recently upgraded its immunization hotline services. The national immunization information hotline is now available to respond to questions about vaccinations, vaccine-preventable diseases, and vaccines.
The hotline serves consumers and health-care professionals. The most frequently asked questions include those related to new vaccines, new vaccination schedules, and vaccine safety. To access the information, call (800) 232-2522 (in Spanish  232-0233). The hotline operates from 8 AM to 11PM, Monday through Friday, with a voicemail system available at all other times.
Immunization Hotline. JAMA. 1997;278(18):1486. doi:10.1001/jama.1997.03550180036017