You can get infection from seals in this game.
But not from soil?
Why!
Soil is full of all kinds of bacteria and fungus that may give you nasty, nasty infections.
https://www.theaustralian.com.au/news/health-science/warning-as-three-die-from-soil-disease/news-story/293f88df25be1ed673d8eea5c443e4dc?nk=95f70bd0e114807b2149851878f28803-1557871672
You would get them when you dig, or plow soil by hand.
Especially if you dig while you have some wounds, chances of infection like this should be greatly increased.