Murphy Woodhouse/KJZZ

Medical professionals screen those seeking vaccines at the University of Sonora in early April 2021.

Second doses for older residents in rural communities in Sonora, Arizona’s neighbor to the south, have arrived.

Nearly 40,000 doses landed this week, split almost evenly between AstraZeneca and Pfizer. That’s according to a Monday tweet from Sonoran Health Secretary Enrique Clausen.

Once those doses are given, older residents of Hermosillo and Cajeme would be among the only eligible recipients still waiting for second doses, according to federal delegate Jorge Taddei.

As of late last week, roughly 420,000 doses had been administered in the state, compared to 4.9 million in neighboring Arizona, according to estimates from Taddei and current Arizona state data.