Work on the rollout of booster shots may be gearing up within the central and local governments — a mass vaccination site run by the Self-Defense Forces opened in Tokyo on Monday — but some people are anxious about when, where and how they will be able to get a booster.

Daily coronavirus cases are still rising nationwide, with reports of breakthrough infections increasing as well. And Prime Minister Fumio Kishida’s administration considers booster shots as key to fighting the virus.

“As infections continue to spread in Japan, the most effective way to prevent (getting infected) is getting a booster shot,” Kishida said in a video posted on Twitter last week.