Just got back from the vet hospital – EL D is still in intensive care in an oxygen tent. So far he hasn't gotten worse but unfortunately is completely blind in one eye and nearly blind in the other. The fungal infection has not spread to his heart or brain yet so there is still hope.
The fungal spores are inhaled when dogs (people can get it too) are snuffling around in decaying vegetation in wet soggy soil along rivers and lakes this time of year and usually occurs in hunting dogs. Wisconsin is a big hot spot and the vets were all surprised (and a little worried I think) about it showing up in MN in a suburban area. Initially the spores are in the lungs but spread throughout the body, though not usually so rapidly as they have in EL D.
The treatment is a specific anti-fungal drug (the name of which I forget at the moment), that is rather costly, and takes maybe two months to completely clear up - although the spores can lie dormant and reactivate years later.
So that's the latest.