Over 60% of people in Japan are dissatisfied with the progress of the nation's COVID-19 vaccine rollout that is trailing many developed countries, a Kyodo News poll showed, with a little more than 100 days to go before the opening of the Tokyo Olympics.

The figure of 60.3% in the nationwide telephone poll conducted from Saturday through Monday compared with 36.5% who said they were satisfied. The country began inoculating about 36 million people aged 65 or older on Monday after beginning its campaign with health care workers on Feb. 17.

Out of the 4.8 million health care workers, those who had received at least one vaccine dose represented about 0.87% of the population as of Saturday, while the rate surpasses 10% in each of the other Group of Seven countries, including 47.15% in Britain, according to researchers at the University of Oxford.