Scientists have discovered that avian influenza viruses have a gene that makes them incredibly resistant to heat, rendering our body's natural defense system – fever – powerless in fighting infection.

Our body has a powerful defence force, the immune system, which protects us from countless germs and viruses every single day. This defence system is so powerful that it needs careful control to ...

Bird flu may be particularly severe in humans because the viruses have shown to be resistant to fever - one of our body's most important defence systems. The human body's temperature will climb in ...