FDA Limits Use Of Johnson & Johnson Vaccine Due To Blood Clot Risk


Johnson & Johnson’s coronavirus vaccine is now solely approved for U.S. adults who’re unable to obtain different vaccines, the Meals and Drug Administration introduced Thursday, citing the Johnson & Johnson vaccine’s danger of doubtless life-threatening blood clotting negative effects.

Key Information

As a result of vaccine’s danger of inflicting thrombosis with thrombocytopenia syndrome (TTS), a blood-clotting dysfunction that may trigger stroke or coronary heart assault, it shouldn’t be used except different vaccines are unavailable or decided to be clinically inappropriate, the FDA mentioned.

TTS is uncommon, affecting about 1 particular person in 250,000 who takes Johnson & Johnson’s vaccine, however it’s way more critical than the often gentle coronary heart inflammations typically related to Pfizer and Moderna’s Covid-19 vaccines.

Johnson & Johnson’s vaccine has additionally been linked to uncommon cases of Guillain-Barré syndrome—an immune dysfunction that may trigger paralysis—although the FDA didn’t cite this in its determination to slender the vaccine’s authorization.

Johnson & Johnson’s vaccine nonetheless has a job in pandemic response, and the choice to slender its authorization demonstrates the thoroughness of the FDA’s security programs, mentioned Dr. Peter Marks, director of the FDA’s Middle for Biologics Analysis and Analysis, in a press release.

In response to the choice, Johnson & Johnson mentioned it had up to date its vaccine truth sheet to extend consciousness of blood clotting negative effects, however identified that the obtainable information continues to point out getting Johnson & Johnson’s vaccine is safer than getting no vaccine.

Key Background

Pfizer and Moderna’s Covid-19 vaccines work by delivering a bit of messenger RNA (mRNA) that instructs cells to construct a innocent piece of coronavirus protein, creating an immune response in opposition to the coronavirus. In distinction, the Johnson & Johnson vaccine delivers directions to construct the immunity-creating coronavirus protein utilizing a chilly virus that has been rendered innocent and is incapable of reproducing. Because it was approved for emergency use in February 2021, Johnson & Johnson’s vaccine has been discovered much less efficient than Pfizer and Moderna’s vaccines. Most medical trials have discovered Johnson & Johnson’s vaccine to be round 68% efficient at stopping hospitalization from Covid-19, far lower than competing vaccines. In March, the Facilities for Illness Management and Prevention beneficial that individuals who have undergone a course of Johnson & Johnson’s vaccine get a booster from Pfizer or Moderna, which might create a stronger immune response and reduce the chance of TTS.


The CDC continues to advocate Johnson & Johnson’s vaccine for anybody who had a extreme response after an mRNA vaccine shot or who would in any other case stay unvaccinated resulting from restricted entry to different vaccines.

Additional Studying

“Johnson & Johnson Reportedly Pauses Covid Vaccine Manufacturing Regardless of Sharp Want In Growing Nations” (Forbes)

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