Belderbos
ME
, et al
Pediatrics
2011
;
127
:
e1513
-e1520
.

Healthy neonates with low concentrations of 25-hydroxyvitamin D (25-OHD) in their cord blood were more likely to develop respiratory syncytial virus (RSV) infections in the first year of life than infants who had high cord blood concentrations of 25-OHD, according to a prospective study of 156 babies.

Several studies have shown that plasma concentrations of 25-OHD are lower in infants hospitalized with acute lower respiratory tract infections than healthy controls. This study looked at whether there is any association between cord blood vitamin D status and the subsequent risk of RSV infection.

While consensus has not been reached on 25-OHD concentrations that would constitute vitamin D insufficiency for infants and children, vitamin D deficiency in adults has been defined as a 25-OHD concentration of less than 50 nmol/L and vitamin D insufficiency as 50-80 nmol/L.

Subjects...

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