(BPT) - Every year, nearly 900,000 Americans are affected by venous thromboembolism (VTE), a condition in which blood clots form in the veins and can migrate to the lungs. These types of blood clots ... Science Daily: Scientists finally crack mystery of rare COVID vaccine blood clots The Hearty Soul on MSN: This is why some people had blood clots from the COVID-19 vaccine and others didn't This is why some people had blood clots from the COVID-19 vaccine and others didn't