Fox Health: Babies' immune system development influenced by birth month

[riky]

Babies' immune system development influenced by birth month

<p>Newborn babies’ immune systems and vitamin D levels differ â€" depending on which month of the year they were born, Medical News Today reported.</p><img src="http://feeds.feedburner.com/~r/foxnews/health/~4/IzbgHt3olFg" height="1" width="1"/>

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