U.S. health officials are recommending Johnson & Johnson’s COVID-19 vaccine not be used until an investigation into cases of post-vaccination blood clots is finished.
The six cases, all among women, involve a rare and severe type of clot called cerebral venous sinus thrombosis in combination with low levels of blood platelets, officials told reporters in a call on April 13. One of the patients died while a second is in critical condition at a hospital.
