Israel was the first country to introduce the fourth dose, announcing in December that adults 60 years of age and older, medical workers, and people with weakened immune systems were eligible if at least four months had passed since the third dose was given. doses. Recently, the Swedish Public Health Agency announced that a second booster dose is recommended for all people aged 80 and over.
In the United States, in turn, health experts emphasized at the end of last year that the fourth dose was not yet needed and decided that it was too early to discuss giving it to most social groups. Now the US Food and Drug Administration is analyzing data on the pandemic and virus variants at home and abroad to a...
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