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Hepatitis B vaccination among children in inner-city public housing, 1991-1997
D S Lauderdale1, R J Oram, K P Goldstein
1Department of Health Studies, University of Chicago, Ill 60637, USA. lauderdale@health.bsd.uchicago.edu
Insights
Hepatitis B vaccine (HBV) coverage reached 50% in an urban population. Early HBV immunization improved timely receipt of other childhood vaccines, potentially increasing overall vaccination rates.
Area of Science:
- Pediatric infectious diseases
- Public health and epidemiology
- Vaccinology
Background:
- Universal infant vaccination against Hepatitis B Virus (HBV) was recommended in 1991.
- Initiation of the HBV vaccine series was advised within days of birth.
Purpose of the Study:
- To assess HBV vaccine coverage in a low-income urban population.
- To investigate if early-life HBV immunization influences subsequent vaccine uptake.
Main Methods:
- A cohort study utilizing immunization records from the Pediatric Immunization Program.
- Analysis of 1143 children born between 1991-1997 in a Chicago public housing development, with follow-up to 35 months.
- Evaluation of on-time receipt for HBV vaccine doses, DTP dose 1, and the 4:3:1 series.
Main Results:
- On-time HBV vaccination coverage plateaued around 50% for infants born in 1995 or later.
- Children receiving their first HBV dose within the first month were significantly more likely to receive DTP dose 1 on time (60.1% vs 36.4%).
- Early HBV immunization was associated with higher rates of completing the HBV series and the 4:3:1 series by 19 months.
Conclusions:
- HBV vaccine uptake in this urban population reached rates comparable to other vaccines within three years of recommendations.
- Infant HBV vaccination at birth is linked to timely receipt of other essential childhood vaccines.
- Early HBV immunization may enhance vaccination completion rates among populations with lower adherence to early childhood vaccine schedules.
Context:
In 1991, the Advisory Committee on Immunization Practices recommended universal vaccination of infants against hepatitis B virus (HBV), with series initiation within days of birth.
Objective:
To determine HBV vaccine coverage in a low-income urban population and to examine whether HBV immunization within the first month of life affects subsequent vaccine receipt.
Design:
Cohort study based on immunization records collected in the Pediatric Immunization Program. Setting Large public housing development in Chicago, Ill.
Participants:
All 1143 children who were born between 1991 and 1997 and enrolled between 1993 and mid-1998, with follow-up to age 35 months.
Main Outcome Measures:
On-time vaccine receipt of HBV vaccine doses, diphtheria-tetanus-pertussis vaccine (DTP) dose 1, and the 4:3:1 series (4 doses of DTP vaccine, 3 doses of poliomyelitis vaccine, and 1 dose of measles-containing vaccine), analyzed by year.
Results:
On-time HBV vaccination increased quickly following new guidelines and reached a plateau of about 50% coverage for those born in or after 1995. Since 1994, more children (64%) received the first HBV vaccine dose on time than any other vaccine. Children who received a dose of HBV vaccine during their first month of life were more likely to receive the first DTP vaccine dose on time (60.1%) than those who did not get an HBV vaccine dose during the first month (36.4%; chi2 = 53.7; P<.001). Children who received the first HBV vaccine dose during their first month were more likely than those receiving it at age 1 to 2 months to complete 3 HBV doses by 19 months (70.6% vs 51.1%; chi2 = 11.6; P = .001) and to complete the 4:3:1 series by age 19 months (49.8% vs 37.9%; chi2 = 4.0; P = .05).
Conclusions:
In this inner-city population, HBV vaccine has been received at rates similar to those of other vaccines within 3 years of issuance of new recommendations. Of note, immunization with HBV vaccine at birth was associated with timely receipt of other vaccines and, therefore, may have the potential to increase vaccination among groups less likely to be up-to-date on early childhood vaccines.
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