Dengue virus in sub-tropical northern and central Viet Nam: population immunity and climate shape patterns of viral invasion and maintenance. Autor Maia A Rabaa, Cameron P Simmons, Annette Fox, Mai Quynh Le, Thuy Thi Thu Nguyen, Hai Yen Le, Robert V Gibbons, Xuyen Thanh Nguyen, Edward C Holmes, John G Aaskov