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The incidence of cystic fibrosis (CF) can vary significantly among different racial groups; within white populations it has been reported to vary from 1/3419 in the USA to 1/2500 in the UK and 1/4700 in Italy. According to Lewis,1 the highest incidence that can be reliably expected in white populations is 1/2500, although a value as high as 1/936 has been reported in a well defined community.2
Italy and other European countries have experienced a heavy influx of immigrants from Albania in the last 10 years following political and economic upheaval occurring in that country. Although precise numbers are not available, since 1989 some tens of thousands of Albanian immigrants have settled in Tuscany, a region of central Italy populated by 3.5 million people in an area of 23 000 sq km. There are no data on the incidence of CF in Albanians, so we have calculated the incidence …