“…The preparation of Vietnam for the COVID-19 vaccination program can be considered a case study for similar settings, as the country has managed to implement an efficient vaccination program that boost the vaccination rate from 7.5% of adults having a least one dose to 100% in 5 months from August 2021 to February 2022 ( 1 ). What is more, this unprecedented vaccination campaign was administrated in the period when COVID-19 was at its worse in Vietnam as the Delta variant spread, racking up cases and claiming life, putting a heavy burden on the healthcare system.…”