u/eurekaidea

In a Nutshell
A viral protein called mgG-2, long dismissed as unimportant, turns out to help HSV-2 escape infected cells and spread toward the nervous system in mice.
A vaccine made from that same protein protected 93.7 percent of mice from a lethal dose of the virus and sharply cut its spread into nerve and spinal-cord tissue.
The protein’s natural sugar coating is what makes it work: stripping away both main sugar groups dropped survival to 43.8 percent.