TOKYO >> Tokyo Gov. Yuriko Koike on Wednesday urged younger people to cooperate with measures to bring down the high number of infections and get vaccinated, saying their activities are key to slowing the surge during the Olympics.

On Tuesday, the Japanese capital reported 2,848 new cases, exceeding its previous record in January.

Koike noted that the majority of the elderly have been fully vaccinated and infections among them have largely decreased, while the mostly unvaccinated younger people are now dominating the new cases.

“Younger people’s activity holds the key (to slowing the infections), and we need your cooperation,” Koike said. “Please make sure to avoid nonessential outings and observe basic anti-infection measures, and I would like younger people to get vaccinated.”

As of Tuesday, 25.5% of the Japanese population has been fully vaccinated. The percentage of the elderly who are fully vaccinated is 68.2%, or 36 million people.

Vaccination prospects for the younger have improved, and some can get their shots organized by work places and colleges, while others still wait based on seniority. But there are also concerns over hesitancy among the young, with surveys showing many of them having doubts, in part due to fake rumors about side effects.

Younger people have been blamed for roaming downtown areas after the requested closing hours for eateries and stores and spreading the virus. Tokyo is under its fourth state of emergency, which is to continue through the Olympics, but it mainly focuses on requiring establishments to stop serving alcohol and shorten their hours. Measures for the public are only requests and they are increasingly ignored.

Prime Minister Yoshihide Suga has also urged people to avoid nonessential outings but says there is no need to consider a suspension of the Games, which are held with no fans in Tokyo and three neighboring prefectures — Chiba, Kanagawa and Saitama.

Governors of the three areas, alarmed by Tokyo’s surging cases, said on Wednesday they plan to jointly ask Suga to place their prefectures under the state of emergency too.

Nationwide, Japan reported 5,020 cases in the last 24 hours for a total of 870,445 and 15,129 confirmed deaths.

Japan has kept its cases and deaths lower than many other countries. Its seven-day rolling average of cases is about 3.57 per 100,000 people, compared to 2.76 in India, 17.3 in the United States and 53.1 in Britain, according to data from Johns Hopkins University.