The epidemic prevention and control work was still active in some places, leading only in leadership and implementation organization, the period began when a strong epidemic broke out in Ho Chi Minh City and some southern provinces due to the spread of Delta variable. spreading rapidly, extremely dangerous, unpredictable and difficult to control; remains consistent in the implementation of measures to prevent and control the epidemic, especially in the implementation of social distancing requirements at the grassroots; Implement regulations on people's travel, lack of information system storage between localities, causing congestion and complications for people. Access to vaccine sources compared to some countries is slow and difficult due to global scarcity; Buying vaccines carries many risks, must accept the installation of the supplier's conditions. The medical capacity, especially at the grassroots level, is still limited and inadequate, leading to overcrowding in some localities and a high number of deaths in the early stages. Deploying tools to support and ensure social security in some locations, especially isolation and blockade areas, is still difficult because of the large number of users who need support. According to the first, about millions of people need assistance in the same point; Ho Chi Minh City alone has supported all 3 phases up to about 7.5 million people.