Following record COVID-19 deaths in January, several US experts extolled the benefits of vaccinating as many people as possible with one dose of COVID vaccine before ensuring people receive the recommended second dose.Dose-delaying strategy gains tractionSome public health experts are urging the federal government via the Centers for Disease Control and Prevention's (CDC's) Advisory Committee on Immunization Practices (ACIP), to immediately review data from Pfizer and Moderna, which are approved for use as two doses given 3 to 4 weeks apart, and consider giving as many first doses to people 65 and older as quickly as possible, and not withhold vaccines for planned second doses.Such a dosing strategy has already been used in the United