>>Ours were still positive at age of 47.
From childhood? Not bad, though the 15-30 year BCG estimates always were conservative. Unlike latest C19 efforts that may need annual or semiannual boosters, depending who you listen to...
"... They ne'er cared for us
yet: suffer us to famish, and their store-houses
crammed with grain; make edicts for usury, to
support usurers; repeal daily any wholesome act
established against the rich, and provide more
piercing statutes daily, to chain up and restrain
the poor. If the wars eat us not up, they will; and
there's all the love they bear us."
-- Shakespeare: Coriolanus, Act 1, scene 1
