Mij
Senior Member (Voting Rights)
In clinical trials, [the Shingrix vaccination] was shown to be 97% effective in preventing shingles in adults aged 50-69...
My understanding is that Shingrix has been shown to protect against shingles for at least seven years.
It was also advised to update tetanus shot every 10 years, but recent studies show that it's effective for 40 years. Who knows. I try not to step on nails and wear shoes outdoors.