Tokyo has 0.1 percent rate of virus antibodies
NHK -- Jun 17
Testing by Japan's health ministry suggests that 0.1 percent of people in Tokyo have developed coronavirus antibodies.

The ministry tested 7,950 people aged 20 or older from June 1 to 7 and analyzed their blood samples for the presence of certain proteins that indicate a past infection.

The people were chosen randomly in Tokyo, Osaka and Miyagi prefectures.

The ministry announced on Tuesday that antibodies were indicated in 0.1 percent of people tested in Tokyo, 0.17 percent in Osaka, and 0.03 percent in Miyagi.

As of the end of May, the percentage of people who tested positive with coronavirus was 0.038 in Tokyo, 0.02 in Osaka and 0.004 in Miyagi.

The percentage of people who had antibodies was higher than these figures. But ministry officials say the data shows that most of the population in Japan does not have coronavirus antibodies.

The officials say they do not know how long the antibodies remain in the human body and whether they can prevent a second infection.

16日に東京都が新たに確認した新型コロナウイルスの感染者は27人で、『東京アラート』が解除された11日から6日連続で20人以上の日が続いています。このうち接待を伴う飲食店の従業員や客は10人で、全体の4割近くにあたります。 こうしたなか、国が、感染歴があるかを調べる抗体検査の結果が判明しました。今月初めに東京都、大阪府、宮城県で約8000人を対象に行われ、感染歴があり抗体を持っている人の割合は、東京では0.1%、大阪では0.17%、宮城では0.03%でした。これに、それぞれ人口をかけると、単純計算で、東京は約1万4000人、大阪は約1万5000人、宮城では700人ほどが感染した可能性があるということになります。5月末の時点で確認された累積感染者数は、東京で約5200人、大坂では約1800人、宮城では90人ほどで、抗体検査の結果から推計される数とは大きな開きがあり、感染している人が大勢いることが考えられます。
News sources: NHK, ANNnewsCH
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