http://cdcsonla.gov.vn/Default.aspx?sname=ttksb&sid=80&pageid=1594&catid=3233&id=24399&catname=Phong--chong-benh-truyen-nhiem&title=Bao-cao-cua-he-thong-giam-sat-benh-truyen-nhiem--tinh-hinh-dich-benh-viem-duong-ho-hap-do-chung-moi-cua-vi-rut-corona--nCoV--tren-dia-ban-tinh-Son-La-