BEACON combines immune-stimulating DNA (red) and chemokines (blue) to help guide protective immune cells to the female reproductive tract. Credit: Sachin Bhagchandani

A Two-Part Herpes Vaccine Gave Protection to Mice

An injection primes the immune system, then nanoparticles applied vaginally pull immune defenders to where herpes enters. In mice, 80 percent showed no disease for six months, versus 40 percent with the shot alone. Human trials remain distant.