Mexican health authorities began to vaccinate older adults with a Covid-19 vaccine developed by Chinese pharmaceutical company Sinovac, after a shipment of doses arrived on February 20. Mexico's government designated the first shipment of the Sinovac vaccine to arrive in Ecatepec, a city in central State of Mexico that lies on the outskirts of the capital Mexico City, Xinhua news agency reported on Wednesday. Early in the day, brigades of healthcare workers began to administer the vaccine to hundreds of residents aged 60 and over who went to the Las Americas cultural and sports centre to get vaccinated. "The first call was very important because it lets us know there is interest on the part of the citizens and, above all, that they are hopeful this issue can now be eradicated from our population," Ecatepec Mayor Fernando Vilchis told reporters at the vaccination site.