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Corona 19 vaccination has begun in the United States, but the rate at which vaccination is performed is slowing down enough to meet the original government goal. For this reason, the US government is considering expanding the number of vaccines with the vaccine reserved for the second vaccine. This is a report from the Washington correspondent, Taewook Kang. It is a complex used as a vaccination site in Florida, USA. Those who sit in a simple chair and wait their turn will never know the end. The vaccination site and qualified medical personnel are limited, so vaccination is not quick. As a result, it is impossible to vaccinate 20 million people by the end of the year, the original goal of the United States government. By the last day of 2020, the number of vaccinations did not reach 3 million. President-elect Joe Biden also pointed this out, emphasizing that he would speed it up as soon as he took office. NBC aired an analysis that it would take nearly 10 years at the current rate when the required vaccination rate for group immunization is 80%. As a result, the US government began thinking about expanding the initial vaccines. This is a plan to give other people the vaccine for the second vaccine that has been reserved as the first vaccine. To achieve adequate immunity, the Pfizer vaccine must be administered 21 days after the first vaccination and the Modena vaccine must be administered 28 days after the second vaccination. As such, it appears that the key will be whether or not the amount of water can be delivered at the time of the second vaccination. YTN Kang Tae-wook from Washington[[email protected]]is.