World No link established at this stage between thrombosis and...

No link established at this stage between thrombosis and Johnson & Johnson’s serum


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The Johnson & Johnson vaccine is given as a single dose but is only 66% effective. – SOPA Images/SIPA

A reprieve for the “J & J” serum. While the US single-dose Johnson & Johnson are about to land in Europe, the US Medicines Agency (FDA) is investigating cases in the United States. It has not yet established a causal link between the formation of blood clots and the injection of this vaccine against Covid-19.

Johnson & Johnson’s single-dose vaccine was urgently authorized in the United States at the end of February, after two-dose vaccines from Pfizer / BioNTech and Moderna. The European regulator has also approved the Johnson & Johnson vaccine, and its implementation in European Union countries is due to begin imminently.

First conclusive tests in the United States

“The FDA is aware of information in the United States of serious thromboembolic events, sometimes associated with thrombocytopenia (low levels of platelets in the blood), which have occurred in a few individuals after receiving the vaccine against Janssen’s Covid-19, ”the US regulator said in a statement to AFP, citing the name of the European subsidiary of Johnson & Johnson. “For the moment, we have not found a causal link with the vaccination and we are continuing our investigation and evaluation of these cases,” the agency added. “We will keep the public informed when we learn more,” she also said.

The European Medicines Agency (EMA) said earlier Friday to investigate links between the “J & J” vaccine and cases of blood clots. “One case occurred during a clinical trial and three occurred during vaccination in the United States. One of them was fatal, ”added the EMA.

The FDA said it was “aware of the EMA press release”, which is “based” on information that the US agency provided to it, “received during the post-authorization use of the Covid-19 vaccine from Janssen ”in the United States.



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