The influence of the COVID-19 pandemic on measles vaccination coverage.
We conducted a systematic review to assess the impact of the COVID-19 pandemic on measles vaccination coverage. We searched for articles published between January 2021 and December 2023 in Portuguese, English, and Spanish in the Web of Science, ScienceDirect, PubMed, and LILACS databases. The final sample consisted of 32 studies, which demonstrated that most countries had a 1% to 10% decrease on measles vaccination coverage during the pandemic. However, the influence of the pandemic varied worldwide, ranging from 1% to 60% based on the region. The COVID-19 pandemic has had a relatively modest impact on measles immunization, with a complex intersection of several factors associated with the decrease in measles vaccination coverage.