Unfortunately, so far this vaccine has only been produced and will be available for the first time in April, after which it will be distributed to support other countries. In addition to some countries that have produced vaccines with high antibacterial rates such as the US, Germany, UK, Australia, China ... etc., the rest are still in the research process. However, variants of covid19 are always cloned and the infection rate of variants like Delta, Lambda is very fast. It makes the epidemic even more intense. Vaccine delivery cannot respond effectively to new variants. It is still on alert. I think it will take a long time for the world to return to normalization and even then the process of restoring the economy, society, and trade is a very difficult problem.