Viruses hit men harder than women

BELGRADE - Viruses, it turns out, have most likely evolved to affect men in more severe ways than women: tuberculosis, papillomavirus, and others have that in common. Now a fresh study has discovered the surprising reason why that might be.

And it's not because pathogens are sexist. Part of the explanation could be the differences in the two sexes' immune systems. But scientists at the Royal Holloway University of London believe they've made a breakthrough in identifying the main reason - that women are more valuable hosts for the viruses.

The differences in severity are stark. As it turns out, men are 1.5 times more likely to die of tuberculosis than women, twice more likely to develop Hodgkin's lymphoma from the Epstein-Barr virus as well - and a whopping five times more likely to develop cancer if infected with the papillomavirus.

As the researchers point out,...