strangles ??

My 4 work days weren't too bad this time too. Well, Sunday evening someone discovered that one of the 2 year old Quarter horses has a bump on this jaw which broke open... ! Is it strangles ? Or an abscess ? A bad tooth ? Anyway, someone said the horse has strangles, she has to go in the hospital barn over night. So, we put her in this other barn and the vet came the next day to have a look at her. Poor little girl ! She wasn't happy at all to be in this barn all by herself... :( The vet took an example of the liquid in the bump to send it away for a test. In the meantime we almost closed down the barn, no horse leaves or come to the barn. The warmbloods can go out in the paddocks during the day, the Quarter horses not. We disinfect all the places where different horses have been, at every door is a tub with water and bleach,... and it smells almost like in a hospital. Every barn has its own tools now... I sure hope it's not strangles.