NT: Biden has been injected with two stitches Pfizer's new crown vaccine to strengthen the needle or was infected

China Well -off. July 22 The new coronary virus infection by the old horse President Biden Biden is a clear example. Although the new coronary vaccine is powerful, it is far from the bulletproof shield that is far from scientists.

Biden accepted his second crown vaccine in the White House to strengthen the needle injection

The New York Times NT reported that Mr. Biden had vaccinated Multi-Doseki Pfizer-Biontech vaccine; his recent injection was the second strengthening injection on March 30.Studies have shown that these doses will provide a strong fortress for against severe diseases -in fact, according to the White House, after the President's test is positive on Thursday, there will be only mild symptoms so far.

But even the enhanced dosage can hardly prevent infection, especially for the latest version of the virus.Several studies have shown that the protection provided by them quickly and quickly weakened.As far as the president is concerned, the strengthening injection that he accepted nearly four months ago may have lost most of the effect of preventing infection.

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