A consignment of one million doses of Sinovac COVID-19 vaccine being loaded on a PIA special plane at airport APP01-160521 BEIJING: May 16 - A consignment of one million doses of Sinovac COVID-19 vaccine being loaded on a PIA special plane at airport. APP APP01-160521 APP02-160521BEIJING: May 16 – A consignment of one million doses of Sinovac COVID-19 vaccine being loaded on a PIA special plane at airport. APP