47% of cystic fibrosis (C.F.) heterozygotes had positive prick skin tests of 1 or more of 9 antigens and 53% had histories of allergic disease, both occurring significantly more often than in a control group. Since 1 in 20 of the population are C.F. carriers, this would contribute to allergy in the community.

DOI: 10.1016/S0140-6736(76)91862-6
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