Viruses like SARS-CoV-2 use sugar molecules to hide from the immune system, but scientists at Scripps Research have designed a universal coronavirus vaccine that strips these sugars and exposes a stable, rarely mutating part of the spike protein. This approach triggered strong immune responses in
the varicella vaccine prevents severe infections, but its not entirely protective against it, it just makes you asymptomatic, and once you get reinfected it can still become dormant, and get hsingles, just less chances of getting it.