9 January 2023. Cambodia began to provide a sixth dose of COVID-19 vaccine to people across the country free-of-charge. To date, Cambodia has inoculated 15.24 million, or 95.2 percent of its 16-million population, adding that 10.4 million people have received a third dose, while 4.78 million have taken a fourth and 1.25 million have got a fifth.