Evaluation of the Effectiveness of the Policy of Holding the Second Dose of Vaccination: Lessons from the Outbreak in Ho Chi Minh City. - Trang VTT; Van Truong L; Van Dat T; Elsheikh R; Anh NT; Thang DX; Thang VV; Makram AM; Huy NT; Nagasaki University Collaborative (Vaccines, 2023)