This was reported by The Wall Street Journal with reference to a Pfizer spokesman.
Trucks will deliver 500 thousand doses of coronavirus vaccine to medical institutions.
It is assumed that the vaccination of social and medical workers can start in the United States from Monday, December 14, if additional training of staff is not required.
It was previously reported that Pfizer's COVID-19 vaccine will arrive at distribution centers in 636 US locations on December 14.
On December 12, the US Food and Drug Administration (FDA) approved a vaccine from Pfizer for emergency use.