You can see the full article here: https://www.cpsp.cps.ca/uploads/publications/pxy155-Teething...

It looks like it has a short intro paragraph that talks about a specific case with no identifying details (beyond "a previously healthy 4-month-old boy"), citing this report by other doctors: https://pubmed.ncbi.nlm.nih.gov/27503268/ followed by further discussions of physician reports and survey data.

The correction is explicitly listed as applying to that article (https://academic.oup.com/pch/article-abstract/24/2/132/51642...), which itself seems false since that article doesn't seem to include a fictional vignette.