A health worker administers a Pfizer COVID-19 booster shot to an elderly man at his residence during a door to door vaccination campaign in Tangerang Indonesia, Friday, Jan. 21, 2022. Indonesia kicked off a COVID-19 booster campaign for the general public on Jan. 12, prioritizing the third shots for the elderly and people with compromised immune systems. The country is hoping to provide more than 20 million booster shots in January to people who received their second jabs at least six months ago. (AP Photo/Tatan Syuflana)

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