Last night, I was researching boots that are suitable for hiking and wet wading. I came across numerous forum posts (in the USA), with people talking about wet wading being dangerous. There was horror stories about people getting scratches, getting bad infections and then ending up in hospital. Wet wading in NZ and Australia (my home country) is really common and I never heard of stuff like this before. Is this a legit concern, or just paranoia? How does one know where is safe/unsafe to wet wade?