eddy wrote:

how real are these for us to worry about.
what are they ?

Anthrax, botulism, tetanus, etc.... take your pick.

Of these probably only tetanus is worth being routinely protected
against. Botulism is relatively common but only a serious health risk if
you try making your own herbs in oil and don't get the mix exactly
right.

Many soil fungi and bacteria are beneficial or neutral. So don't
panic!!!

Regards,
Martin Brown