Hemophilia epidemiology and demographics
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Overview
Epidemiology and Demographics
About 18,000 people in the United States have haemophilia. Each year, about 400 babies are born with the disorder. Haemophilia usually occurs in males and less often in females.In the UK we now know that of every four baby boys born with Haemophilia, one will be born to a family with no previous history of the condition.
Haemophilia A
The incidence of Haemophilia A is around 1 in 5000 male births. Approximately a third of affected individuals have no family history. Haemophilia A accounts for around 80% of cases.
Haemophilia
Haemophilia B (also known as Christmas disease) accounts for the remaining 20% of cases and results from a deficiency of coagulation Factor IX. The incidence of Haemophilia B is around 1 in 25,000 male births.