What We Know On Blood Clots Linked To AstraZeneca, J&J Vaccines

With both the AstraZeneca and J&J vaccines, the reports involve extremely rare clotting, including a type of blood clot called cerebral venous sinus thrombosis that were seen in combination with low levels of blood platelets.

US regulators have recommended pausing the use of Johnson & Johnson's COVID-19 vaccine, as they investigate rare blood clotting in six women. J&J also said it was stopping the rollout of its vaccine in Europe. The move comes after Europe's drug regulator earlier this month said it had found a possible link between AstraZeneca's COVID-19 vaccine and very rare blood clots in some adults who had received the shot. Britain's health regulator, meanwhile, has recommended people under the age of 30 get an alternative COVID-19 vaccine, if possible, rather than the AstraZeneca shot.