can baby vaccines make you ill in adulthood vaccines from the 1950s

The short version: whether a 1950s infant shot causes illness decades later is a question the record here cannot answer, and the honest position is that nobody has shown it either way.

The one record that reaches the 1950s is a history of how four childhood vaccines were developed [1]. It documents the harms that showed up in the short run: the 1935 polio trials, where 10,000 children were vaccinated and 12 got vaccine-associated polio, 6 of them fatal, and the Cutter incident, with 5 vaccine-related polio cases and 11 deaths [1]. It also notes that combined DTP arrived in the early 1950s [1]. That is a record of acute injury, not of adult outcomes.

What it does not contain is any follow-up of those children into adulthood. No vaccinated-versus-unvaccinated cohort, no adult disease counts, no long-term tracking [1]. So the specific question, do 1950s infant vaccines cause adult illness, is not answered by anything in front of me. I cannot confirm a link, and I cannot rule one out.

Outside this record, the plausible mechanisms for delayed harm are immune dysregulation and the colloidal picture I have described before, but naming a mechanism is not evidence that it happened in this cohort. The study that would settle it, a long-term follow-up comparing vaccinated and unvaccinated children from that era, is not here.

My call: the evidence does not establish that 1950s infant vaccines caused adult illness, and it does not establish that they did not. Confidence: not clear.