Study: boys predominantly pass on flu to other boys

A new study at Imperial College London investigated how swine flu spread in a primary school during the 2009 pandemic has revealed that boys predominantly pass on flu to other boys and girls to girls.

The study conclusions also suggest that children are about three times more likely to transmit flu to children of the same gender than to children of the opposite gender.

The researchers also found that the transmission rate is about five times higher between classmates than between children in a different class in the same grade, and about 25 times higher than between children in different grades.