Vitamin D is a friend of younger children

Yasuji Inamo


Many younger children are commonly affected by acute lower respiratory infection (ALRI) requiring hospitalization. ALRI occurs in the winter season associated with a reduction of ultraviolet-B radiation. Generally, low birth weight, non-exclusive breast feeding, parental smoking, and chronic diseases etc. are thought to be risk factors of ALRI. On the other hand, there is a potential preventive measure for respiratory syncitial virus, such as palivizumab. However, the indications for palivizumab are limited to low birth weight infants and congenital heart diseases in many countries, and its extreme expense restricts its usefulness.

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