Which World Hemophilia Day is 2022?

What is World Hemophilia Day in 2022? April 17 every year is the 34th World Hemophilia Day. In order to commemorate the contribution of Frank Shunabo, the founder of the World Hemophilia Alliance, who was born in Canada, and arouse the public's correct understanding of hemophilia, his birthday, April 17, has been specially chosen as World Hemophilia Day since 1989. On this day every year, the World Hemophilia Federation holds activities, and hemophiliacs around the world also celebrate festivals.

Introduction to hemophilia Hemophilia is a group of hereditary hemorrhagic diseases, in which thrombokinase is damaged in the first stage of coagulation. It includes hemophilia A, hemophilia B and hemophilia C. Among them, hemophilia A is also called coagulation factor VIII deficiency or anti-hemophilia factor A deficiency. True hemophilia and anti-hemophilia globulin deficiency are traditional hemophilia; Hemophilia is also called coagulation factor ⅸ deficiency or plasma thromboplastin (PIC) deficiency; Hemophilia C is also known as coagulation factor VII deficiency and plasma thromboplastin precursor (PTA) deficiency. Among congenital hemorrhagic diseases, hemophilia is the most common, especially hemophilia A, accounting for about 85%, followed by hemophilia B and hemophilia C.

Genetic situation

① Male patients marry normal women, and the boys born are normal, while the girls are carriers.

② When a female carrier marries a normal man, the boy born may be a hemophiliac or a normal person, while half of the girls are carriers and half are normal people.

③ The probability that a sick man marries a carrier woman and gives birth to a boy is 50%, that is to say, about 1/2 of the boys born are normal. Among the girls born, there may be hemophilia or carriers.