"The particles of the vaccine strain had a smooth and stable surface layer, while the particles of the virulent strain had bumpy, uneven surfaces." The differences change how the body's immune system ...

(Qi Yang/Moment/Getty Images) Sound waves already used in medical scans may have a surprising new target: viruses. In lab experiments, scientists have demonstrated how ultrasound blasts can break down ...

Viruses are crafty and can employ different strategies to spread. One approach involves a virus relying on another “helper” virus to infect. A classic example is hepatitis delta virus (HDV), which ...