S. Parlindungan Gultom, a 76-year-old doctor, receives his first shot of China's Sinovac Biotech vaccine for the coronavirus disease (COVID-19), as Indonesia approved use of the vaccine for its elderly population, in Jakarta, February 8, 2021. Elderly medical workers in Indonesia received their first coronavirius vaccinations on Monday (February 8) after initial uncertainty about whether seniors in the pandemic-hit Southeast Asian nation would receive priority vaccines. REUTERS/Willy Kurniawan

V.S. Ritonga, a 84-year-old doctor, receives his first dose of China's Sinovac Biotech vaccine for the coronavirus disease (COVID-19) as Indonesia approved use of the vaccine for its elderly population, in Jakarta, Indonesia, February 8, 2021. Indonesia rolled out their vaccination program in January, targeting medical workers aged between 18 to 59 only, citing limited data on the safety of the available vaccine for anyone older. REUTERS/Willy Kurniawan

A senior doctor reacts as she receives her first shot of China's Sinovac Biotech vaccine for the coronavirus disease (COVID-19), as Indonesia approved use of the vaccine for its elderly population, in Jakarta, February 8, 2021. The food and drug agency (BPOM) said on Saturday (February 6) in a letter seen by Reuters that it had authorised the use of Sinovac's CoronaVac for the elderly "taking into account the emergency situation of the COVID-19 pandemic and the limited information on the benefits and safety of that vaccine". REUTERS/Willy Kurniawan

A doctor looks on as a medical worker prepares a dose of China's Sinovac Biotech coronavirus disease (COVID-19) vaccine, as Indonesia approved use the vaccine for its elderly population, in Jakarta, February 8, 2021. REUTERS/Willy Kurniawan

A senior doctor reacts as he receives his first shot of China's Sinovac Biotech vaccine for the coronavirus disease (COVID-19), as Indonesia approved use of the vaccine for its elderly population, in Jakarta, February 8, 2021. REUTERS/Willy Kurniawan

S. Parlindungan Gultom, a 76-year-old doctor, leaves a temporary tent after receiving his first dose of China's Sinovac Biotech coronavirus disease (COVID-19) vaccine, as Indonesia approved use othe vaccine for its elderly population, in Jakarta, February 8, 2021. REUTERS/Willy Kurniawan