US Health Secretary Kennedy announced tightening of authorization for the use of the COVID-19 vaccine, leading to a slight increase in shares of vaccine companies like Pfizer (PFE.US).

Zh tng cijng APP hnd, Migu wishng y gnggng fw b bzhng Knn D zhusn biosh, Migu shw yo pn jinsh gunl j (FDA) y chq cqin shfng de xngun yshng cngmng shyng zhnghng, bng du huf (PFE.US) de yshng duxing shzhle gng yn'g de xinzh. According to the Securities Times Financial APP, US Department of Health and Human Services Secretary Kennedy stated on Wednesday that the US Food and Drug Administration (FDA) has revoked the emergency use authorization of the Pfizer vaccine and set stricter restrictions on the recipients.