What is risk of cystic fibrosis?

Depends on genes: The risk of acquiring cystic fibrosis (CF) depends on whether the parents of a child are carriers for the gene. It is estimated that about 1 in 20 americans are carriers of the CF gene. In order for a child to acquire the disease, both parents must be carriers. If both parents are carriers, there is then a 25% chance that the child will acquire the disease.

Varies: The risk varies by ethnic group - in the us caucations have a risk that is quoted as being from 1 in 2000 to 1 in 3500, Asian americans risk is somewhere around 1 in 31, 000.