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Do "those" refer to "antibodies that reacted to PF4"? Or refer to "some patients"?
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But so far, there is no evidence that the messenger RNA–based vaccines made by the Pfizer-BioNtech collaboration and Moderna, which tens of millions of people have received, are causing similar clotting disorders.
Initial studies by Greinacher’s team, posted as a preprint, don’t support that theory either. Among more than 200 patients who had recovered from COVID-19, they found only a few with antibodies that reacted to PF4, and those reacted relatively weakly. More importantly, Greinacher says, the platelet-activating antibodies isolated from VITT patients did not react to the coronavirus spike protein. At a press conference on Friday, Greinacher called the finding “fantastic news for the vaccination program.”
Source: https://www.sciencemag.org/news/202...ca-vaccine-and-rare-clotting-disorder-becomes
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But so far, there is no evidence that the messenger RNA–based vaccines made by the Pfizer-BioNtech collaboration and Moderna, which tens of millions of people have received, are causing similar clotting disorders.
Initial studies by Greinacher’s team, posted as a preprint, don’t support that theory either. Among more than 200 patients who had recovered from COVID-19, they found only a few with antibodies that reacted to PF4, and those reacted relatively weakly. More importantly, Greinacher says, the platelet-activating antibodies isolated from VITT patients did not react to the coronavirus spike protein. At a press conference on Friday, Greinacher called the finding “fantastic news for the vaccination program.”
Source: https://www.sciencemag.org/news/202...ca-vaccine-and-rare-clotting-disorder-becomes
