On Facebook, a March 18, 2021 post published a list of “adverse reactions” to the vaccine of Pfizer-BioNTech. Among the effects are disorders, deaths, neoplasms and others.
It affirms that these are contemplated in a “report” published on March 4 of this year by the Government of the United Kingdom. However, this information is misleading.
Vaccines from Pfizer – BioNTech and the University of Oxford-AstraZeneca are currently used in the UK. These have the authorization of the Medicines and Health Products Regulatory Agency (MHRA), located in London.
These “reactions” are not necessarily side effects produced by the vaccine.
Indeed, the MHRA published a report on March 4 that contains a list of “adverse reactions” similar to the one in the post. This document contains information on the yellow card scheme, in which people report any post-immunization effects.
This European institution requires, through a weekly summary of Yellow Card reports, that reported reactions are not necessarily triggered by COVID-19 vaccines. This content, hosted on the MHRA official site, was updated on April 1, 2021 and covers information on the December 9, 2020 al March 21 this year.
“Part of our oversight role includes reviewing reports of suspected side effects. Any member of the public or healthcare professional can submit suspected side effects through the Yellow Card scheme. The nature of Yellow Card reports means that reported events are not always proven side effects. Some events may have occurred anyway, regardless of vaccination“, Explain.
Likewise, he points out that it is important to bear in mind that the data from the Yellow Card cannot be used “to derive rates of side effects or to compare the safety profile” of vaccines. This is because different factors can influence the reporting of adverse reactions.
In addition, at the conclusion of the updated summary sentence: “The number and nature of suspected adverse reactions reported so far are not unusual compared to other types of commonly used vaccines.”.
Even in an interview with Damned, the MHRA clarified that the March 4 list “does not collect cases of confirmed side effects of the vaccine, but suspicions of possible side effects that then have to be reviewed to identify ‘risks’ ”.
Likewise, it specified that the existence of this notification “does not necessarily mean that the vaccine caused the suspected reaction“And highlights that”no conclusions can be drawn ”on the safety and risks of vaccines based on these data.
On the other hand, scientists wrote a Article, published on March 10, 2021 in The Conversation, in which they analyze the efficacy and side effects of vaccines authorized for emergency use by the Food and Drug Administration (FDA) and the European Medicines Agency (EMA). Among them is that of Pfizer-BioNTech, Moderna and others.
They indicate that these vaccines have reported adverse reactions that are “not essentially different” from vaccines received at birth. “Some differences are observed according to the intensity, which can be mild or moderate, but they always remit after two days with regular prescription painkillers. Reactions of severe intensity have not been observed in any vaccine “, they specify.
They maintain that “allergic reactions” have been observed, which are generally rare, so rapid interventions were established. However, they point out that the investigation of the Adverse effects of these vaccines does not end once approved and that surveillance seeks to detect any reaction in the immunization process.
The list of the post is similar to the list of adverse reactions contemplated in the report of March 4 of the MHRA. However, according to this European institution, these “effects” are reported by anyone after a vaccination and were not necessarily caused by Pfizer vaccines. That is, they are not proven side effects. Therefore, we qualify the post as misleading.
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