# COVID-19 disruptions left 23 million children without basic routine immunization in 2020

Date: 2021

_No public text on this fact yet._

## Drivers

- Vaccine hesitancy / confidence collapse: https://factrail.ai/drivers/vaccine-hesitancy-wave

## Sources

_Sources are listed on the canonical page._

## Methodology

https://factrail.ai/methodology

Canonical: https://factrail.ai/facts/who-unicef-routine-immunization-backslide-2020