Childhood Immunization Status (CIS-E)

The percentage of persons 2 years of age who had four diphtheria, tetanus and acellular pertussis (DTaP); three polio (IPV); one measles, mumps and rubella (MMR); three haemophilus influenza type B (HiB); three hepatitis B (HepB), one chicken pox (VZV); four pneumococcal conjugate (PCV); one hepatitis A (HepA); two or three rotavirus (RV); and two influenza (flu) vaccines by their second birthday.

The measure calculates a rate for each vaccine and three combination rates.

Why It Matters?

This measure follows the best available evidence for guidelines on immunizations 1, 2, 3.

Childhood immunizations help prevent serious illnesses such as polio, tetanus and hepatitis. Vaccines are a proven way to help a child stay healthy and avoid the potentially harmful effects of childhood diseases like mumps and measles.

Historical Results – National Averages

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References

  1. CDC Advisory Committee on Immunization Practices. 2025. “Health Care Professionals: Child and Adolescent Immunization Schedule by Age.” Last Updated October 7, 2025. https://www.cdc.gov/vaccines/hcp/imz-schedules/child-adolescent-age.html
  2. American Academy of Pediatrics (AAP). 2026. “Recommended Child and Adolescent Immunization Schedule for Ages 18 Years or Younger.” https://downloads.aap.org/AAP/PDF/AAP-Immunization-Schedule.pdf?_gl=1*1qnckkk*_ga*MTc4MTcyNDg1MS4xNzQ5NjUyOTM0*_ga_FD9D3XZVQQ*czE3NzI0Njc5MzckbzU0JGcwJHQxNzcyNDY3OTM3JGo2MCRsMCRoMA..
  3. American Academy of Family Physicians (AAFP). 2025. “Birth Through Age 18 Immunization Schedule.” https://www.aafp.org/family-physician/patient-care/prevention-wellness/immunizations-vaccines/immunization-schedules/birth-through-age-18-immunization-schedule.html

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