AUTHOR=Doan Linh Phuong , Dao Nam Gia , Nguyen Duy Cao , Dang Trang Huyen Thi , Vu Giang Thu , Nguyen Long Hoang , Vu Linh Gia , Le Huong Thi , Latkin Carl A. , Ho Cyrus S. H. , Ho Roger C. M. TITLE=“Having vaccines is good but not enough”: Requirements for optimal COVID-19 immunization program in Vietnam JOURNAL=Frontiers in Public Health VOLUME=11 YEAR=2023 URL=https://www.frontiersin.org/journals/public-health/articles/10.3389/fpubh.2023.1137401 DOI=10.3389/fpubh.2023.1137401 ISSN=2296-2565