"Human infection with Fusobacterium necrophorum usually involves F. necrophorum subsp. funduliforme rather than F. necrophorum subsp. necrophorum, which is a common pathogen in animals. " (
Why can't humans catch horse Thrush, since the bacteria that causes it, also causes sore throats in people?
I don't know if there is any peer reviewed research specific to your question. That said, every commercial nostrum, unguent, cream, whatever, has been "field tested" on countless numbers of horses. The off label use of dry cow mastitis ointment is among that group and has proven effective in most every case. That said, thrush is symptomatic of other hoof issues that cause the frog tissues to be susceptible to the pathogens responsible for thrush infections.
I loved the articles that Simkie posted, but has there been studies where actual infected tissue has been tested? I assume so, but the only "studies" I have come across has been from barefoot trimmers.
IMNTBCHO and experience, the bacterial infection starts first. And, to complicate matters (or not ;) ), in cases of White Line Disease, the primary pathogen is a fungus though there is often bacteria present secondarily.........
So, if, like I suspect, there is often times an fungal infection, then which came first? Did the fungus start first which lead to the infection, or did the bacterial infection start, which lead to a fungal infection deep in the sulcus?