2 years ago my mare breeze got pigeon fever. Had 4 horses and she was the only one to get it. It presented as a swollen area on her chest, and thought initially she just got kicked again but didnt go down, sent pics to my vet and he said looks like pigeon fever. he said there are two kinds, one that is internal and you wont see it they will just be lame or not act normal, and then there is the external abcess that developes, which are the best kind because they are visable. Told me to wait a few days and when the spot looks like it was coming to a head to call him and he would come out and lance it. So it did , he came out, he told me to have a stall ready, also had a bucket with garbage bag on hand to drain the abcess into once he lanced it. Everything worked as planned, kept her up for a few days, was advised to spray scarlet oil in the wound a couple times a day until healed. No antibiotics, they arent even recommended unless dealing with internal pigeon fever, because those eventually get obsorbed by the horses body, so will need antibiotics then. Vet actually said he feels its more of a immunity thing with horses(course my accident prone horse was the one to get it), he said you can have a barn of 100 horses and only 2 get it...so doesnt feel its something that is spread like strangles. Course I made sure I disposed of anything that got drained on after abcess was drained. The positive thing is she cant get it again if drought brings it back. You cant even tell where the abcess was. It was just overwelming because of the unknown factor but now that it was over it just seems like it wasnt that big of deal.