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ZURICH International drug regulators have said the benefits of using COVID-19 vaccines developed by Johnson & Johnson and AstraZeneca outweigh risks as they investigate reports of extremely rare, but potentially fatal blood clots.
Several EU countries have restricted their use.
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Amid concerns that reports of rare side-effects could undermine vaccine confidence, experts have emphasized that clotting risks for both shots remain extremely low and the vaccines are highly effective in preventing COVID-19 deaths and severe disease.
Fox News medical contributor Dr. Marc Siegel provides insight on ‘Fox and Friends First.’
Scientists world-wide are racing to understand why Covid-19 vaccines from AstraZeneca PLC and Johnson & Johnson are causing rare but potentially deadly blood clots.
Determining the connection would help patients, doctors and health agencies better assess any risks posed by the vaccines and safely calibrate their use. In recent weeks, the U.S., the Canadian province of Ontario and several European countries including Norway and Denmark either paused or completely halted rollouts involving these vaccines. Understanding the cause is of highest importance for the next-generation vaccines, because [the novel] coronavirus will stay with us and vaccination will likely become seasonal, said Eric van Gorp, a professor at Erasmus University in the Netherlands who heads a group of scientists studying the condition.
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21 April 2021 - 09:27 By Reuters The EMA said on Tuesday it suspects the vaccine may trigger an unwanted immune response, but safety committee chairwoman Sabine Straus said it has not identified specific risk factors. Image: REUTERS/DADO RUVIC
A German scientist studying extremely rare blood clots linked to AstraZeneca s Covid-19 vaccine said on Tuesday Johnson & Johnson has agreed to work with him on the research after similar serious side effects emerged in recipients of its shot.
Andreas Greinacher, a transfusion medicine expert at Greifswald University, announced the collaboration after the European Medicines Agency said it would add a label to J&J s vaccine warning of unusual blood clots with low platelet counts. AstraZeneca s shot has a similar warning.
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ZURICH (Reuters) - A German scientist studying extremely rare blood clots linked to AstraZeneca s COVID-19 vaccine said on Tuesday Johnson & Johnson has agreed to work with him on the research after similar serious side effects emerged in recipients of its shot.
Andreas Greinacher, a transfusion medicine expert at Greifswald University, announced the collaboration after the European Medicines Agency said it would add a label to J&J s vaccine warning of unusual blood clots with low platelet counts. AstraZeneca s shot has a similar warning.
As with AstraZeneca, the EMA said benefits of getting J&J s shot still outweigh the clotting risk, a position Greinacher backs, too.