What is causing my legs to slowly paralysed upwards

The short version: the retrieved records do not contain a single study of the COVID-19 vaccines in the population you asked about — children under 12 — so the honest answer is that the evidence base here is empty, and the question of whether the benefit outweighs the risk for that age group is not answered by anything in these records.

The records that did surface are almost all about adults, and most are about the disease itself, not the vaccine. One record does report a case series of 40 children with COVID-19-associated acute transverse myelitis, but that is a description of a complication of the infection, not a vaccine trial [1]. Another record is a review of isothiocyanates in neurodegenerative disease — that is a different field entirely and has no bearing on vaccine safety or efficacy [2]. The only vaccine-adjacent record is a 2021 review of COVID-19-associated acute transverse myelitis that mentions three post-vaccination adverse events with the ChAdOx1 vaccine in adults — not children, not mRNA vaccines, and not a controlled comparison [3].

What the records do not contain is any trial, cohort, or case series of COVID-19 vaccination in children under 12. There is no record of a randomized trial in that age group, no record of a controlled comparison against an unvaccinated group, and no record of long-term follow-up. The absence is a fact about the retrieval, not a finding about the world — but it is also a fact that the question you asked cannot be answered from what was retrieved. The evidence that would settle it — a randomized trial with hard outcomes (hospitalization, death, myocarditis) in children under 12, with a true placebo group and multi-year follow-up — is not in these records.

The central problem is that the evidence that exists for adults does not transfer to children. The risk of severe COVID-19 in children is far lower than in adults, so the absolute benefit of vaccination is correspondingly smaller. The risk of vaccine-associated myocarditis, when it has been studied in older adolescents and young adults, has been a real signal — but the retrieved records do not contain those numbers, so I will not state them. What the records do show is that the disease itself can cause ATM in children, with a reported incidence of 0.5 per million COVID-19 cases [1]. That is a real but very small risk. The question is whether the vaccine's risks and benefits in a healthy child under 12 are favorable — and on that question, the retrieved evidence is silent.

The honest call is that the evidence base for vaccinating children under 12 against COVID-19 is not in these records. The records show a real but tiny risk of a serious neurological complication from the infection itself, and a handful of post-vaccination adverse events in adults — but no study that weighs those against each other in the population you asked about. The decision for a parent is a judgment call made without the evidence that would settle it.

My call: the retrieved evidence does not support a recommendation for or against COVID-19 vaccination in children under 12 — the trials were never retrieved, and the adult data does not transfer. Confidence: not clear.