Highly-vaccinated Israel's third-wave surge in both cases and deaths: https://www.worldometers.info/coronavirus/country/israel/
Unvaccinated Palestine's lack of third wave deaths: https://www.worldometers.info/coronavirus/country/state-of-p...
Not only is that article not a study but rather a letter to the editor, but also in their last paragraph they explicitly state that ADE in SARS-CoV-2 has never been demonstrated in vivo. Here is the relevant quote from the letter:
>[...] Although this potential risk has been cleverly anticipated before the massive use of Covid-19 vaccines6, the ability of SARS-CoV-2 antibodies to mediate infection enhancement in vivo has never been formally demonstrated. [...]
https://blogs.sciencemag.org/pipeline/archives/2021/08/16/a-...