Re:Covid-19 at a homeless shelter in Boston: Implications fo...
by coliveira on Wednesday April 15, 2020 @07:30PM
(#22884389)
BCG vaccine requires a booster every few decades, so it becomes less effective over the years. Apart from health issues related to age, this would explain why old people are at higher risk.
Obvious to me, perhaps dumb, question - if countries that were slower to change vaccination regimes have some advantage, then wouldn't we see older people in the countries that did change also at an advantage? Yet all reporting seems to be that older people are harder hit.