BeCuriouzLearn something new every day
The virus that hides in your body for 50 years — then strikes
💡 Shingles isn't a new infection — it's your childhood chickenpox virus reactivating from dormant nerve cells, and vaccination is the main way to prevent it.
If you had chickenpox as a kid, the virus never fully left. After the rash healed, the varicella-zoster virus retreated into clusters of nerve cells near your spine and brain, where it can sit silently for decades. Your immune system keeps it caged — but it's still there, waiting.
Decades later, when immunity naturally weakens with age (or during illness or stress), the virus can reawaken and travel back down a nerve to the skin. The result is shingles: a painful, blistering rash that usually wraps around one side of the torso or face, following the path of a single nerve. Around 1 in 3 people will get shingles in their lifetime, and risk climbs sharply after age 50.
The biggest concern isn't the rash itself but postherpetic neuralgia — nerve pain that can linger for months or years after the blisters clear. This is why prevention matters: the modern recombinant shingles vaccine is over 90% effective at preventing an outbreak and is generally recommended for adults 50 and older. Because shingles comes from your own dormant virus, you can't fully avoid the risk through lifestyle alone — which is what makes vaccination the key protective tool.