A woman reacts while receiving her first dose of China's Sinovac Biotech vaccine for the coronavirus disease (COVID-19) during the mass vaccination program for the elderly people at a school in Jakarta, Indonesia, February 26, 2021. Indonesia has authorised a private vaccination scheme to run alongside its national programme so that companies can buy state-procured vaccines to inoculate their staff, a ministerial regulation showed on Friday. REUTERS/Ajeng Dinar Ulfiana

A woman receives her first dose of China's Sinovac Biotech vaccine for the coronavirus disease (COVID-19) during the mass vaccination program for the elderly people at a school in Jakarta, Indonesia, February 26, 2021. The scheme, which will be one of the few private vaccination progammes in the world, has drawn some criticism from health experts who warn it could worsen inequity. REUTERS/Ajeng Dinar Ulfiana

A medical worker prepares a dose of Sinovac's vaccine before giving it to a healthcare worker at an emergency hospital in the Athlete Village in Jakarta, Indonesia, January 27, 2021. REUTERS/Ajeng Dinar Ulfiana/File Photo

A healthcare worker prepares a dose of China's Sinovac Biotech vaccine for the coronavirus disease (COVID-19) during the mass vaccination program for clergy at the parking lot of Grand Istiqlal Mosque in Jakarta, Indonesia, February 25, 2021. REUTERS/Ajeng Dinar Ulfiana

Healthcare worker prepares a dose of China's Sinovac Biotech vaccine for the coronavirus disease (COVID-19) during the mass vaccination program for clergy at the parking lot of Grand Istiqlal Mosque in Jakarta, Indonesia, February 25, 2021. REUTERS/Ajeng Dinar Ulfiana

A vendor receives a dose of China's Sinovac Biotech vaccine for the coronavirus disease (COVID-19), as Indonesia drives mass vaccination program for vendors at the Tanah Abang textile market in Jakarta, Indonesia, February 17, 2021. REUTERS/Ajeng Dinar Ulfiana