Japan is set to declare a state of emergency in seven more prefectures in addition to Tokyo and five other areas due to an increasing strain on hospital beds propelled by the resurgence of COVID-19 infections, government sources said Monday.

The quasi-state of emergency already declared in parts of the seven prefectures -- Ibaraki, Tochigi, Gunma, Shizuoka, Kyoto, Hyogo and Fukuoka -- will be expanded to a prefecture-wide state of emergency from Friday to Sept. 12.

The government plans to make a final decision Tuesday. Prime Minister Yoshihide Suga is expected to announce the decision at a press conference after a panel of experts approves it, the government reports it to the Diet and a government task force on the coronavirus response gives the go-ahead, the sources said.

Japanese Prime Minister Yoshihide Suga (3rd from R), accompanied by Tokyo Gov. Yuriko Koike (2nd from R), visits a facility in Shinagawa Prince Hotel East Tower on Aug. 16, 2021, to get a first-hand look at an "antibody cocktail" treatment for COVID-19 patients. The treatment, administered intravenously, is said to be effective in preventing COVID-19 patients from developing severe symptoms. (Pool photo) (Kyodo) ==Kyodo

With the state of emergency through Aug. 31 for Tokyo, Kanagawa, Chiba, Saitama, Osaka and Okinawa prefectures also being extended to Sept. 12, the number of prefectures covered will be 13, according to the sources.

Under the state of emergency, restaurants and bars serving alcohol or offering karaoke are asked to shut during the period, while those not serving liquor are requested to close at 8 p.m.

The declaration of a quasi-state of emergency, under which governors determine serving hours for alcohol at establishments taking anti-virus steps after considering infection trends, will expand to 16 prefectures.

The nationwide number of COVID-19 patients with severe symptoms totaled 1,603 in Japan on Monday, up 40 from the previous day and marking a record high for the fourth consecutive day, according to a tally based on local governments' data.

Photo shows "antibody cocktail" approved by the Ministry of Health, Labour and Welfare. (Chugai Pharmaceutical Co.)(Kyodo)

A total of 14,854 new COVID-19 cases were reported Monday across the country, up around 2,700 from a week earlier.

Of the total, 2,962 cases were in Tokyo, 2,584 in Kanagawa, 1,609 in Chiba and 1,301 in Saitama prefectures.

The daily figures in Chiba and Kanagawa prefectures, as well as those in Toyama and Saga prefectures, were record highs, according to the tally.

Suga said Monday it is his mission to enhance vaccination efforts and health care capacity amid the highly contagious Delta variant running rampant across the globe.

He spoke to journalists after holding talks with Yasutoshi Nishimura, minister in charge of the government's coronavirus response, and health minister Norihisa Tamura, among others.

Earlier in the day, Suga visited a Tokyo hotel at which COVID-19 patients were undergoing treatment, and said Japan has secured enough "antibody cocktails" to prevent COVID-19 patients in the country from developing severe symptoms.

Patients with mild symptoms are staying at Shinagawa Prince Hotel in the capital's Minato Ward and undergoing the treatment, which according to overseas clinical trials lowers the risk of hospitalization or death by about 70 percent.

The antibody cocktail treatment uses casirivimab and imdevimab developed by U.S. firm Regeneron Pharmaceuticals Inc. and Swiss health care company F. Hoffmann-La Roche Ltd. and is administered intravenously.

It was famously used to treat former U.S. President Donald Trump for COVID-19.

Suga has announced a plan to create hubs to conduct the treatment soon, hoping to reduce the number of patients with serious symptoms that has been rising with the spread of the Delta variant.