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Underimmunization at discharge from the neonatal intensive care unit
A M Navar-Boggan1, N A Halsey, G J Escobar
1Department of Internal medicine, Duke University Medical Center, Durham, NC, USA. ann.navar@duke.edu
Insights
Many infants discharged from the neonatal intensive care unit (NICU) are not up-to-date on immunizations. This study identified factors associated with underimmunization, highlighting the need for improved vaccination strategies before NICU discharge.
Area of Science:
- Neonatal care
- Pediatric immunology
- Public health
Background:
- Neonatal intensive care units (NICUs) provide critical care for vulnerable infants.
- Timely immunizations are crucial for protecting infants from vaccine-preventable diseases.
- Underimmunization in this population can lead to increased risk of infection.
Purpose of the Study:
- To determine immunization rates at discharge for infants aged 2 months and older from the NICU.
- To identify risk factors associated with underimmunization at NICU discharge.
Main Methods:
- Retrospective cohort study of 668 infants discharged from six Northern California Kaiser Permanente NICUs on or after 60 days of age.
- Immunization status at discharge was assessed.
- Logistic regression analysis was employed to identify risk factors for underimmunization.
Main Results:
- Only 51% of infants were up-to-date on routine immunizations at discharge.
- Twenty-seven percent of infants had received no vaccines.
- Mechanical ventilation, congenital heart disease, apnea, and bronchopulmonary dysplasia were associated with higher immunization rates, while surgery was linked to lower rates.
Conclusions:
- A substantial proportion of infants discharged from the NICU at 2 months or older were underimmunized.
- Interventions to improve immunization rates prior to NICU discharge are necessary.
- Targeted strategies may be required for infants with specific medical conditions or interventions.
Objective:
The objectives of this study are to determine immunization rates at discharge from the neonatal intensive care unit (NICU) among infants 2 months of age and above and to evaluate risk factors for underimmunization.
Study Design:
A retrospective cohort study was performed for infants in six NICUs in the Northern California Kaiser Permanente Medical Care Program. Immunization status at discharge was determined for all infants discharged on or after age 60 days. Logistic regression was used to identify risk factors for underimmunization at the time of discharge.
Result:
Of 668 infants discharged on or after age 60 days from the NICU, 51% were up-to-date for routine immunizations. Twenty-seven percent of infants had received no vaccines. Factors associated with higher immunization rates at discharge include history of mechanical ventilation, congenital heart disease and a diagnosis of apnea or bronchopulmonary dysplasia during the NICU stay, whereas surgery was associated with lower immunization rates.
Conclusion:
A significant proportion of infants discharged on or after 2 months of age in the NICU in this health system was unimmunized or underimmunized at discharge. Further efforts should be made to improve immunization rates prior to discharge.
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