The clinical and immunologic findings of two breast-fed babies who experienced anaphylaxis after a feeding with a partially whey hydrolysate formula (PWHF) are reported. Sensitization to this formula seems to have occurred in the first days of life in the Maternity Hospital where the babies were fed the same formula. These two case reports suggest that PWHF may be immunogenic in the IgE system. This data is in agreement with previous studies which showed intact fragments of cow's milk (CM) proteins in PWHF.
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Businco et al. (1994) studied this question.
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