MEXICO CITY — San Diego County and private businesses have donated 10,000 coronavirus vaccines to vaccinate workers at U.S.-owned border assembly plants in Tijuana.

Foreign Relations Secretary Marcelo Ebrard says the program is aimed at helping equalize vaccination rates at closely connected points along the U.S.-Mexico border.

“This is the first cross-border agreement we have had. This is surely going to grow a lot,” Ebrard said. “We plan to replicate this all along the border.”

The vaccines are being administered by medical personnel from the University of California, San Diego, at the San Ysidro border crossing. The program started Monday with about 150 to 200 shots administered per hour.

Mexico has had a shortage of COVID-19 vaccines, and has received only about 34.2 million doses for a population of 126 million. Since most vaccines require two doses, Mexico has only vaccinated about 15% of its population so far.