Yamagata City announced on the night of the 23rd that five of the five people who announced that they had been infected with the new coronavirus were negative as a result of retesting.
On the 22nd, Yamagata City said that five staff members of "Yamagata Saisei Hospital" in Yamagata City were confirmed to be infected with the new coronavirus as a result of PCR tests, and a group of infected people = clusters occurred at the hospital. Announced.
According to Yamagata City, the amount of virus detected in the first PCR test was small, and all of them were asymptomatic, so when these five people were tested twice again, they were all negative. That is.
Along with this, only one person was confirmed to be infected at "Yamagata Saisei Hospital", and Yamagata City expressed the view that the cluster "has not occurred".
Yamagata City commented, "We are scrutinizing the cause of the positive test result. We would like to consider countermeasures as soon as the cause is known."
As a result, the number of confirmed infections in Yamagata Prefecture on the 22nd was 16 instead of 21, and the total number of confirmed infections was 682.