A clinical study of healthy adult volunteers who consented to be infected with the 2009 H1N1 influenza virus under carefully controlled conditions has provided researchers with concrete information about the minimum dose of virus needed to produce mild-to-moderate illness.
Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/V...
Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/V...