Indonesia is taking a markedly different approach to others in its COVID-19 vaccination programme.
Instead of vaccinating elderly people in the first phase of the free programme, after frontline workers, it will target younger working people aged 18 to 59.
President Joko Widodo, 59, was the first person in the country to receive the vaccine shot on Wednesday.
The country's vice president, who is 77-years-old, will not get the jab early as he is too old.
Professor Amin Soebandrio, who is on a board that advised the government on its youth first strategy, argues that it makes sense to prioritise immunising working people as they are likely to spread the virus.
He argues this approach will give the country the best chance of achieving herd immunity, something that occurs when a large portion of a community becomes immune through vaccinations or the mass spread of a disease.