Dr. Fouch, chief medical adviser to the U.S. government, said on the 16th that Pfizer and Moderna's new coronavirus vaccine may be less effective over time after additional vaccinations. He expressed his intention to carefully consider whether it is necessary.
Dr. Fouch, chief medical adviser to the U.S. government, said at a press conference on the 16th that Pfizer and Moderna's new coronavirus vaccine will be asked if a fourth dose is needed in addition to the current third dose. Often, "he said, explaining his current thinking.
According to the analysis of the effect of booster vaccination published by the US CDC = Centers for Disease Control and Prevention, the effect of preventing hospitalization for people who have completed three vaccinations is 2 from the vaccination when the Omicron strain became mainstream. It was 91% within a month, but it decreased to 78% after 4 months or more.
Dr. Fouch commented on the results of this analysis, "although it has declined, it can be said that the effect of preventing hospitalization is relatively high." Additional vaccinations are extremely important. We will monitor the data from time to time for the fourth vaccination to determine if recommendations are needed, "he said.