http://www.sciencemag.org/news/2021/03/syringe-size-and-supply-issues-continue-waste-covid-19-vaccine-doses-united-states

Science’s COVID-19 reporting is supported by the Heising-Simons Foundation.

Piled up in hospital storage closets—and even in boxes donated to an animal shelter—sit syringes the U.S. government has provided to administer COVID-19 vaccines. They’ve been set aside because they're not effective at extracting all available shots from the multidose vials supplied by vaccinemakers.