At an expert meeting of the Ministry of Health, Labor and Welfare on the 28th, data on the number of people in major downtown areas nationwide was presented as one of the indicators to estimate the future infection situation.
In Tokyo, where the infection continues to spread, the number of people at night is declining, but the rate of decrease is smaller than when the previous state of emergency was declared.
This data was presented by the Center for Social Health Medicine, Tokyo Metropolitan Institute of Medical Research, at an expert meeting of the Ministry of Health, Labor and Welfare on the 28th.
Based on the location information of mobile phones obtained in a form that does not identify individuals, the number of people who have stayed for 15 minutes or more outside of work or home is defined as the "resident population" of 500 in the major downtown areas of each municipality. It is analyzed hourly with a metric mesh.
All data are up to July 24th.
In the state of emergency
In Tokyo, where the fourth state of emergency has been declared, analysis is based on data from seven downtown areas such as Shinjuku, Shibuya, and Roppongi.
The "resident population" during the day has decreased for three consecutive weeks, and the "resident population" at night has decreased for four consecutive weeks.
The “resident population” at night has decreased by 18.9% in the two weeks since the state of emergency was declared, but the rate of decrease was less than half compared to the previous state of emergency in April. I am.
Among them, the midnight time zone from 10 pm to midnight, which is considered to have a high risk of infection, decreased by 48.5% two weeks after the previous declaration, while it decreased by 12.7% in this declaration. It has been declining and is still at a high level.
In Okinawa Prefecture, the "resident population" has been on an increasing trend both at night and during the day, but it has decreased significantly during the past week both at night and during the day.
The population staying increased during the Golden Week holidays in May, but no increase was seen during the four consecutive holidays this time, both at night and during the day.
In areas where priority measures such as spread prevention are applied
In Kanagawa and Saitama prefectures, the “resident population” at night has been declining since the beginning of the four consecutive holidays, but both are still at high levels.
In Chiba prefecture, it increased before the four consecutive holidays, and no clear downward trend has been seen since then.
In Osaka Prefecture, the nighttime "resident population", which had been increasing for two consecutive weeks, has been declining since the four consecutive holidays, but it is said that it is still at a high level.
In particular, the midnight "residence population" from 10 pm to midnight has been declining only modestly, at the same high level as in early April, when it was in the fourth wave of the epidemic.