along with "Sobig" and other computer viruses face a daunting challenge: an incredibly hard-to-track international crime set in an obscure and anonymous environment. They also say they are ...

How did viruses evolve? Are they a streamlined form of something that existed long ago, or an ultimate culmination of smaller genetic elements joined together? Aa Aa Aa The evolutionary history of ...

Severe infection with West Nile virus is a spreading problem worldwide that disproportionately affects those over age 50. And evidence is mounting that when the virus causes sickness, the long ...

The left side of my face has dropped and is agonisingly sore ... It is triggered by the virus varicella zoster, which most people carry from childhood as it also causes chickenpox, but in later ...