Originally, each vial of Pfizer's Covid-19 vaccine was designed to contain five doses, but some pharmacists reported they could extract six doses when using certain syringes. If standard syringes and needles are used, there may not be sufficient volume to extract a sixth dose from a single vial." The New York Times first reported Pfizer's plans to base its vaccine commitment on doses instead of vials. Nearly 1.6 million vaccine doses were administered Friday, the largest one-day increase reported. The state of New York has administered 97% of its allocated first doses of the Covid-19 vaccine, Governor Andrew Cuomo said Friday, and is expected to run out shortly.

Source: CNN January 23, 2021 08:03 UTC