FILE PHOTO: A healthcare worker prepares a dose of Sinovac’s vaccine for the coronavirus disease (COVID-19) during a mass vaccination for medical workers at the Istora Senayan stadium in Jakarta, Indonesia, February 4, 2021. REUTERS/Willy KurniawanMEXICO CITY (Reuters) – Mexico has authorized an emergency use approval for China’s Sinovac COVID-19 vaccine, Deputy Health Minister Hugo