Executives at Pfizer and Moderna mentioned their vaccines appeared secure they usually did not see the necessity to duplicate the efforts of regulators and firms already wanting into the uncommon blood clot problem, in response to the Journal report.

Solely AstraZeneca, whose vaccine has additionally raised considerations from regulators over blood clots, agreed to affix the trouble, the Journal mentioned.

On Tuesday, the Meals and Drug Administration and the Facilities for Illness Management and Prevention suggested states to quickly pause the usage of J&J’s vaccine “out of an abundance of warning” after six ladies developed a uncommon however probably life-threatening blood clotting dysfunction that left one lifeless and one in crucial situation.

The ladies developed the situation generally known as cerebral venous sinus thrombosis, or CVST, inside about two weeks of receiving the shot, U.S. well being officers advised reporters. CVST is a uncommon type of a stroke that occurs when a blood clot kinds within the mind’s venous sinuses. It may well finally leak blood into the mind tissues and trigger a hemorrhage.

A CDC panel on Wednesday determined to postpone a call on the usage of J&J’s vaccine whereas officers examine the circumstances.

Learn the total Wall Avenue Journal report right here.