The treatment consists of antibiotics and intravenous fluids.  Dogs that are affected often take many days and sometimes even weeks to recover.  In the meantime, they are usually hospitalized and kept in isolation so that the disease is not spread throughout the hospital. A few will die from the disease.

 Meat that has been contaminated with the bacteria is a major cause of this disease.  This is one of many good reasons to keep your dog out of the garbage.  Overcrowded, dirty, and stressful living conditions can also make a dog susceptible to this disease.  Finally, raw diets can and have been known to harbor the bacteria that causes this disease and have been a source of Salmonellosis in dogs. 

 Therefore, if you feed your dog a raw diet (and I am in no way advocating this practice), there are a few rules to keep in mind to make this as safe as possible.  The food should be stored frozen and only thawed shortly before feeding it to your dog, if any of the thawed diet is left uneaten then throw it away, and obtain the raw diet from a reputable source.  Avoid feeding dogs under one year old raw diets as well as pregnant dogs because these dogs are more susceptible to the disease.  In addition, if you are a dog owner with young children or there is someone in your household who has a compromised immune system, then avoid feeding the dog in the house a raw diet.  If the dog becomes a salmonella carrier as a result of the food it is easy for the salmonella bacteria to be passed on to these individuals.

 Cats can also get Salmonellosis so all the rules above for dogs are also applicable for cats.  The most significant difference is that adult cats are more resistant to the disease compared to adult dogs.  But the disease can be just as devastating in cats as in dogs.