Nguồn Bắc Kạn: http://baobackan.com.vn/phong-chong-dich-benh-covid19/202108/dieu-chinh-bo-sung-thuc-hien-mot-so-bien-phap-phong-chong-dich-covid-19-tren-dia-ban-tinh-bac-kan-tu-00-gio-ngay-22-thang-8-nam-2021-c7a0d82/