Federal health officials warned doctors and patients Tuesday to watch for symptoms that could indicate an extremely rare but serious form of blood clot in the brain suffered by six women who received Johnson & Johnson’s coronavirus vaccine. So what should you look for if you are one of the more than 7 million people who have received the company’s one-dose vaccine or are scheduled to receive it soon?

What to know

  • What are the symptoms of a blood clot?
  • What is cerebral venous sinus thrombosis?
  • Why did the FDA and CDC urge a pause in the use of the Johnson and Johnson vaccine?
  • Is there a link between the vaccine causing blood clots and birth control?
  • Who is most at risk after having received the vaccine?
  • What are experts saying?