In Chiba Prefecture, 7840 people were newly infected with the new coronavirus on the 21st.
3240 people increased compared to Sunday a week ago.
On the other hand, it was announced that the two people announced on August 4 and 17 would be excluded from the infected.
The total number of infected people has reached 784,759.
This number of infected people does not include the number of people registered as infected people at the "Positive Person Registration Center", a dedicated site for those who have been confirmed to be positive by self-testing using antigen test kits.
In addition, 16 new deaths were announced, including those in their 50s and those in their 70s and older.
A total of 2,119 people have died.