Hi, I am a huge fan of frozen blueberries and also other berries.
However I also read that eating wild berries which grow in the wood can be dangerous because they could have been contaminated with fox feces which could contain echinococcosis eggs and if a human eats them then it's very dangerous and also cannot be cured.
And then I tried to find out where the berries which I always buy in the supermarket come from and emailed the company and asked them where they come from and if they are wild berries or wether they get them from fields which are protected from incoming foxes and they replied that they are from Canada and that they are in fact wild berries but they said that Canada does not really have a problem with echinococcosis unlike other regions in the world. Somehow this doesn't really comfort me but I have already eaten tons of blueberries from them. Should I stop eating them now or should I be worried?
Freezing the berries would not kill off any eggs only boiling them would but who wants to boil his berries? Then you can as well not eat them at all cause the vitamins are dead.