Which countries have reported the highest rates of post-vaccination deaths after adjusting for age and background mortality?

1. No authoritative international ranking exists in the supplied reporting

A search of the provided material reveals no source that produces a validated, age‑adjusted, background‑mortality‑adjusted list of countries ranked by “post‑vaccination deaths.” The closest items are individual-country investigations (e.g., South Korea’s detailed tracking of post‑immunization fatalities) and commentary comparing excess‑death trends across countries, but neither offers a methodologically comparable, multi‑country, adjusted death‑rate ranking ^{[1] [2]}.

2. South Korea: detailed tracking, small numbers of vaccine‑linked myocarditis deaths

Reporting highlights that South Korean public‑health researchers identified 21 deaths from vaccine‑induced myocarditis during their initial campaign covering over 44 million people; those findings are specific to that country’s surveillance and do not by themselves establish comparative ranking with other nations ^[1]. The South Korea example shows intensive national follow‑up can detect rare, plausible vaccine‑associated fatalities, but it is not an adjusted, cross‑national rate comparison ^[1].

3. Excess‑death commentary exists — but it is not the same as post‑vaccination deaths

Commentators such as John Campbell and outlets sympathetic to his analysis have pointed to higher excess deaths in many Western, highly mRNA‑vaccinated countries versus lower excess deaths in some Eastern countries (listing nations like Australia, Denmark, France, Germany, Israel, New Zealand, the U.K., Canada, and Ireland) ^{[2] [3]}. These pieces use excess‑mortality metrics, which capture all causes above expected deaths and are sensitive to pandemic waves, healthcare disruptions, demographics and reporting differences; they do not isolate deaths caused by vaccination nor present age‑adjusted, vaccine‑specific mortality rates ^{[2] [3]}.

4. Methodological gaps make cross‑country adjustment difficult

Available sources emphasize that cause‑of‑death attribution, weighting of multiple causes, and age‑structure matter. For example, a medRxiv analysis notes weighted multiple‑cause approaches can change COVID‑19 death tallies substantially in older age strata, showing how attribution choices alter results — a caution that applies equally to attempts to identify post‑vaccine deaths across populations ^[4]. None of the provided sources supply a standardized international method that adjusts post‑vaccination deaths for age and background mortality across countries ^[4].

5. Competing viewpoints: vaccine safety surveillance vs. alarm‑raising excess‑death analyses

Public‑health investigators and large regulatory agencies generally report very few deaths directly attributable to COVID vaccines, based on intensive national surveillance (example: South Korea’s myocarditis count), while some commentators highlight persistent excess deaths in heavily vaccinated nations and suggest further scrutiny ^{[1] [2]}. The reporting shows a tension: nation‑level surveillance finds rare, specific vaccine harms; cross‑country excess‑death comparisons raise hypotheses but do not prove vaccine causality ^{[1] [2]}.

6. What the available sources do not provide

The provided material does not present a peer‑reviewed, multi‑country dataset that: (a) identifies post‑vaccination deaths; (b) adjusts those deaths for age and expected background mortality; and (c) ranks countries accordingly. It also does not provide causal attribution linking excess deaths in specific countries to vaccination programs; those causal inferences are absent or speculative in the supplied items ^{[1] [2] [4]}.

7. Practical takeaway for readers and researchers

To answer the original query credibly requires standardized international data: harmonized adverse‑event attribution, age‑adjusted denominators, and background mortality baselines. The supplied sources illustrate both the feasibility of detecting rare vaccine‑attributable deaths (South Korea) and the pitfalls of interpreting excess‑death patterns without careful adjustment and causal analysis (commentary and weighted‑cause research) ^{[1] [2] [4]}. Available sources do not mention a definitive, adjusted country ranking of post‑vaccination deaths.