Tracking the impact of the COVID-19 pandemic on routine infant vaccinations in the Dominican Republic

Manuel Colomé-Hidalgo1,2, Juan Donado Campos3, Ángel Gil de Miguel1

  • 1Departamento de Especialidades Médicas y Salud Pública, Universidad Rey Juan Carlos, Madrid, Spain.

Insights

The COVID-19 pandemic severely disrupted vaccination services in the Dominican Republic, leading to significant drops in infant immunization coverage and a rise in unvaccinated infants. Urgent interventions are needed to restore routine vaccination programs and prevent disease outbreaks.

Area of Science:

  • Public Health
  • Epidemiology
  • Global Health

Background:

  • COVID-19 pandemic caused widespread disruptions to essential health services, including routine childhood immunizations.
  • Millions of infants worldwide remain vulnerable to vaccine-preventable diseases due to interrupted vaccination programs.

Purpose of the Study:

  • To analyze the impact of the COVID-19 pandemic on the vaccination program's performance in the Dominican Republic.
  • To compare vaccination coverage, dropout rates, and the number of unvaccinated/partially vaccinated infants before and during the pandemic.

Main Methods:

  • Ecological study design comparing 2019 (pre-pandemic) and 2020 (pandemic) annual public vaccination coverage data.
  • Analysis of trends in vaccine coverage, dropout rates, and number of partially/unvaccinated infants.
  • Geographic analysis by COVID-19 incidence and Human Development Index.

Main Results:

  • Overall vaccine coverage declined by 10.4%, with pentavalent vaccine (Penta3) coverage dropping from 90.1% to 81.1%.
  • The number of partially vaccinated infants increased by 66% (34,185) and unvaccinated infants by 376% (5,593).
  • Dropout rates correlated with COVID-19 cases, and Penta3 coverage changes were associated with the Human Development Index.

Conclusions:

  • The COVID-19 pandemic significantly weakened the Dominican Republic's routine vaccination program performance.
  • There is a critical need for interventions to recover and maintain vaccination coverage, especially in less developed areas.
  • Failure to address coverage gaps increases the risk of outbreaks of vaccine-preventable diseases.

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