Arizona falling behind in COVID-19 vaccine administration compared to other states Experts weigh in as Arizona falls behind in terms of COVID-19 vaccine administration compared to other states. and last updated 2021-01-05 20:42:12-05 More than 101,000 vaccines are now in the arms of Arizonans across the state. Maricopa County alone reported that theyâve vaccinated nearly 59,000 people. But itâs still a far cry from where they wanted to be. As of Tuesday, Arizona has given out just 24% of the vaccine it currently has on hand. An abysmal number especially compared to neighboring states. Colorado and New Mexico for instance have dealt out nearly 43% of their current supply.