211info's Immunization line is a partnership with Oregon Health Authority to provide specialized information & referral services to assist callers with questions relating to immunization including general vaccine information, vaccines schedules, exemption information, public school requirements, and community clinic referrals.

Website provides information on where to get travel vaccinations, as well as a searchable map for authorized yellow fever centers for travelers who need yellow fever vaccinations.

Phone hotline provides recorded information for physicians and travelers on general vaccinations and recommendations, destination-specific recommendations, disease prevention, and food and water precautions for third world countries.