If you are healthy and practice good hygiene, you shouldn't worry much about it.
I have had salmonella, but I have an immune deficiency that makes me susceptible to infections and illnesses. The symptoms I suffered were severe diarrhea 8-10 times per day, lethargy (I slept about 20 hours per day and was very tired the 4 hours I was awake), body pain, extreme joint pain, loss of appetite, nausea, and weight loss. I had it for about a month and I wouldn't wish it on anybody. It is not a mild illness.
You are more likely to get salmonella from poor food handling than from handling chickens. I am susceptible enough that I will not pay for food at the grocery store if the bagger puts veggies or foods that don't get cooked in with raw meats or eggs. I'm sure more than one cashier or bagger has desperately gone on break when they see me walk in since I have given more than a few a lesson on proper food handling (as politely as possible, of course, I do try not to be nasty about it).