it's a risk for certain fish and if you defrost the fish in the fridge for days... but as it stands botulism is not a very common thing to worry about in modern

it's a risk for certain fish and if you defrost the fish in the fridge for days... but as it stands botulism is not a very common thing to worry about in modern society. there are about 200 poisonings per year in the us. a lot are junkies using shared and dirty needles... babies eating honey is another large one. maybe about 20-50 per year in the us is an adult getting food borne botulism. in any event yes it is risky to defrost the fish in a vacuum sealed bag but only if you thaw it for a few days or more like that. 50F fridge is about 2 days and 45F fridge is a few more days before there is growth: https://www.riskyornot.co/episodes/34-thawing-frozen-fish-in-vacuum-packed-bag https://www.riskyornot.co/episodes/34-thawing-frozen-fish-in... Fwiw i just thaw it the day i use it in cold water for < 1hr and it's almost certainly fine to use that day.