Timeliness and Completeness of Routine Childhood Vaccinations by 2 Years of Age in Nigeria.

Fully Vaccinated Yet Under-vaccinated: Timeliness and Completeness of Routine Childhood Vaccinations by 2 Years of Age in Nigeria

Status

UNKNOWN

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT03792022

Enrollment

1800

Registered

2019-01-03

Start date

2019-01-10

Completion date

2019-04-02

Last updated

2019-01-03

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Vaccination Failure

Brief summary

The timeliness of routine childhood immunization should be an important component in measuring vaccination coverage rates especially in LMIC countries like Nigeria, yet this is overlooked. This study will determine the age- specific immunization timely uptake rates for the various vaccines covered in the routine childhood immunization and seek out factors that affect timely vaccine uptake among Nigerian children.

Detailed description

This study will determine the extent of timely and complete routine childhood vaccination uptake in Nigeria. The investigators will also seek to understand the factors that influence timely/complete uptake and make recommendations. this study will also determine if the present immunization records system in Nigeria is capable of measuring timely immunization uptake.

Interventions

BEHAVIORALAdherence to timely vaccine uptake

Adherence to timely vaccine uptake

Study design

Observational model

COHORT

Time perspective

RETROSPECTIVE

Eligibility

Sex/Gender

ALL

Age

1 Months to 24 Months

Inclusion criteria

* Received all vaccines Available immunization records

Exclusion criteria

* Did not receive all vaccines Non- available immunization records

Design outcomes

Primary

Measure	Time frame	Description
Age specific timely vaccination rate for all vaccines in routine vaccination schedule	24 months	The primary outcome measure, age- appropriate immunization is defined as receipt of a scheduled vaccine dose within 30 days of the recommended age. Timeliness will be calculated using child health card data as at 31st December 2018. Descriptive statistics will be produced to describe the characteristics of the sample using frequencies and proportions. Descriptive outcome measures for each dose will be coded as either 'no delay'- age appropriately immunized, delay of 1-6 months' , 'delay greater than 6 months', vaccine received 'acceptably early' (within 30 days prior to when it was due), vaccines received 'too early' (within 30 days prior to when it was due) or vaccine dose not recorded.

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026