Isn’t the vitamin B12 the one that may be an issue for vegetarian people if they don’t pay attention to it? As I am not vegetarian I don’t remember the information, I cannot double check this right now.
Coming back closer to the topic, do you have quantitative estimates for other parts of the world, on top of those provided for the US. I am wondering how many babies are actually affected. Considering the US, we are discussing numbers of the size of half a permille. That’s not that large (of course, it is awful when it happens).
PS: Samuel Armas' story was an amazing story to read about ;)
RE: Folic Acid and the Hand of Hope