4 ) showed a tendency different from the amount of donated whole blood (the sum of 200 mL and 400 mL of donated blood), with a peak in March 2020 in nationwide and all blocks, a remarkable decrease from April to June, and an increasing trend after July 2020, while the amount of 400 mL whole blood donation showed almost the same tendency of the amount of donated whole blood since the amount of 200 mL whole blood donation is by far smaller than that of 400 mL.
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Research on blood donation and supply of red blood cell products to medical institutions under the spread of COVID-19 disease in Japan.
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In addition, even after the declaration of a state of emergency was lifted, the frequency of commuting had been on a decreasing trend compared to January to March 2020, and commuters living in the city center have tended not to go far.