Earlier quoted context omitted.
I was wrong with vitamin C, it was vitamin A deficiency that is correlated with severe symptoms, https://pubmed.ncbi.nlm.nih.gov/28282701/ And given that precise numbers like 93% is meaningless. One should either give the range or at least describe the population. And it turned out 93% was not coming from the study in https://www.pnas.org/content/pnas/118/12/e2026153118.full.pd... , they just reference https://www.nc…
Do you expect HN comments to use more accurate language than medical researchers use in published papers? I don't. So describing the difference between "93%" and "about 93%" as 'much more sensible', in this context, seems excessively nitpicky. Even more so given that you got the wrong vitamin and it took you a couple of tries until you got the right citation.
And note how much better the claim from the original article sounds: the efficiency of at least 90%. Which tells that even if one follow a reasonable lifestyle that minimizes chances of getting the infection (or at least feed infants in a reasonable way as we are talking about And yes, it was stupid for me to rely on the memory when claiming about particular vitamin.