This is stated on the page of the country's Ministry of Health on Twitter.

"The Institute of Public Health has approved the use of Pfizer's COVID-19 vaccine in Chile," the statement said.

đź”´ AHORA |

El Instituto de Salud PĂşblica (@ispch) autoriza el uso de vacuna Pfizer en Chile contra # COVID_19.

pic.twitter.com/7P837jP7vs

- Ministerio de Salud (@ministeriosalud) December 16, 2020

On December 2, UK authorities approved the use of a coronavirus vaccine developed by Pfizer and BioNTech in the country.