Influenza viruses are among the most likely triggers of future pandemics. A research team has developed a method that can be used to study the interaction of viruses with host cells in unprecedented ...

Watch a white blood cell actively searching for bacteria or viruses under the microscope.

ST. LOUIS -- Even as scientists were confirming that the West Nile virus had reached St. Louis, researchers here already have been trying to pinpoint why the mosquito-transmitted form of encephalitis ...

Ignore photo claiming to be HIV under microscope - shows caterpillar, not virus! IN SHORT: Viral posts circulating on Facebook in Kenya and Tanzania claim to show HIV magnified under a microscope, ...