Cystic fibrosis in blacks in Washington, DC: incidence and characteristics.

An intensive search for blacks with cystic fibrosis (CF) in Washington, DC, 
during the period 1962 to 1971 disclosed 16 black patients, eight 
of whom were born in the District of Columbia during this 
decade. The calculated incidence of CF is at least one in 
17,033 black newborns. The clinical course and pathological changes in blacks 
with CF are similar to those in whites. Genetic considerations point 
to autosomal recessive inheritance in blacks, which is generally accepted for 
whites with this disease. 