A woman receives a booster dose of the Pfizer vaccine, as the country starts the booster vaccination program for the general public amid the rise of the Omicron variant in Jakarta, Indonesia, January 12, 2022. Indonesia kicked off its COVID-19 booster programme for the general public on Wednesday, as the world's fourth-most-populous nation hit an almost three-month high in cases amid the rise of the Omicron variant. REUTERS/Willy Kurniawan

A medical worker performs a health screening on a woman who will receive a booster vaccine dose against the coronavirus disease (COVID-19), as the country starts the booster vaccination program for the general public amid the rises of the Omicron variant in Jakarta, Indonesia, January 12, 2022. Elderly and immunocompromised residents, who are being prioritised in the programme, queued up at local health centres to boost their defences against a virus that has infected more than 4 million Indonesians. REUTERS/Willy Kurniawan

A woman receives a booster dose of the Pfizer vaccine, as the country starts the booster vaccination program for the general public amid the rise of the Omicron variant in Jakarta, Indonesia, January 12, 2022. The booster rollout comes amid concern about the spread of the Omicron variant in Indonesia, a densely populated developing nation that was hit with a crippling Delta wave in July. REUTERS/Willy Kurniawan

A medical worker prepares a dose of the Pfizer vaccine booster as the country starts the booster vaccination program for the general public amid the rise of the Omicron variant in Jakarta, Indonesia, January 12, 2022. The booster rollout, for which the Sinovac, Astra Zeneca, Pfizer and Zifivax vaccines have been approved, is running in parallel with the main COVID-19 vaccination programme. REUTERS/Willy Kurniawan

A woman helps an elderly woman who just received a booster dose of Pfizer vaccine, as the country starts the booster vaccination program for the general public amid the rise of the Omicron variant in Jakarta, Indonesia, January 12, 2022. REUTERS/Willy Kurniawan

People sit inside an observation tent after receiving the booster dose of vaccine against the coronavirus disease (COVID-19), as the country starts the booster vaccination program for the general public amid the rise of the Omicron variant in Jakarta, Indonesia, January 12, 2022. REUTERS/Willy Kurniawan