Sweden has revealed that despite adopting more relaxed measures to control coronavirus, only 7.3% of people in Stockholm had developed the antibodies needed to fight the disease by late April.
원문출처 : https://www.cnn.com/2020/05/21/health/sweden-herd-immunity-coronavirus-intl/index.html
원문출처 : https://www.cnn.com/2020/05/21/health/sweden-herd-immunity-coronavirus-intl/index.html