I found a fawn in the woods this year with a massive fusobacterium infection of the mouth. Lower jaw was swollen to two inches wide. I treated it with antibiotics but it died that night, too late with medication.

Fuso bacteria is naturally found in Alabamas soil but usually does not affect most fawns.

I've seen several wild fawns with total blindness cause by a lack of thiamine in their nutrition. Thiamine is deficient in a lot of Alabamas soils and too little causes the cornea not to function corrrectly, causing blindness. Good thing is that it can be corrected most of the time by Vit B-12 shots in a matter of hours. I'd guess that 0% of wild fawns survive blindness.