We found no evidence to support short-term or prolonged feeding with a hydrolysed formula compared with exclusive breast feeding for prevention of allergic disease .
Very low- quality evidence indicates that short-term use of an EHF compared with a CMF may prevent infant CMA .
Further trials are recommended before implementation of this practice .We found no evidence to support prolonged feeding with a hydrolysed formula compared with a CMF for prevention of allergic disease in infants unable to be exclusively breast fed
BACKGROUND Infant formulas containing hydrolysed proteins have been widely advocated for preventing allergic disease in infants , in place of st and ard cow 's milk formula ( CMF ) .
However , it is unclear whether the clinical trial evidence supports this .
OBJECTIVES To compare effects on allergic disease when infants are fed a hydrolysed formula versus CMF or human breast milk .
If hydrolysed formulas are effective , to determine what type of hydrolysed formula is most effective , including extensively or partially hydrolysed formula ( EHF/PHF ) .
To determine whether infants at low or high risk of allergic disease , and whether infants receiving early short-term ( first few days after birth ) or prolonged formula feeding benefit from hydrolysed formulas .
Cow's milk IgE and IgG antibody responses to cow's milk formulas
For comparison of the antigenicity and allergenicity of three cow 's milk formulas , serum IgE antibodies to cow 's milk , β‐lactoglobulin and casein , and IgG antibodies to β‐lactoglobulin were analyzed in 94 infants with a family history of allergy . They were participating in a r and omized trial comparing the allergy prophylactic effect of feeding an extensively hydrolyzed ( N ) , a partially hydrolyzed ( PH ) , and a regular cow 's milk formula ( RM ) .  Only infants who had been formula‐fed for 3 months or more were included . IgE antibodies to cow 's milk proteins were more common in the RM group ( 22/34 ) than in the N ( 2/31 ) and PH groups ( 3/29 ) . There was a strong correlation between sensitization to cow 's milk and β‐lactoglobulin ( r=0.85 , P<0.001 ) . The IgG responses to β‐lactoglobulin were low in the N group , intermediate in the PH group , and high in the RM group . High responses , as well as detection of IgE antibodies , were associated with development of atopic disease . The low antigenicity and allergenicity of the extensively hydrolyzed formula support its use in allergy prophylaxis . The partial hydrolysate seemed to be less suitable for this purpose
We found no evidence to support short-term or prolonged feeding with a hydrolysed formula compared with exclusive breast feeding for prevention of allergic disease .
Very low- quality evidence indicates that short-term use of an EHF compared with a CMF may prevent infant CMA .
Further trials are recommended before implementation of this practice .We found no evidence to support prolonged feeding with a hydrolysed formula compared with a CMF for prevention of allergic disease in infants unable to be exclusively breast fed
BACKGROUND Infant formulas containing hydrolysed proteins have been widely advocated for preventing allergic disease in infants , in place of st and ard cow 's milk formula ( CMF ) .
However , it is unclear whether the clinical trial evidence supports this .
OBJECTIVES To compare effects on allergic disease when infants are fed a hydrolysed formula versus CMF or human breast milk .
If hydrolysed formulas are effective , to determine what type of hydrolysed formula is most effective , including extensively or partially hydrolysed formula ( EHF/PHF ) .
To determine whether infants at low or high risk of allergic disease , and whether infants receiving early short-term ( first few days after birth ) or prolonged formula feeding benefit from hydrolysed formulas .