It's a medical mystery that has officials in one central Kentucky county scratching their heads.
Officials with the Madison County Health Department are trying to find the source of a salmonella outbreak that has sickened several people.
The health department is paying very close attention to who is getting sick and where they live, looking for any possible connections between the six patients who've been diagnosed with salmonella in the past week and a half.
Christie Green says, "the only common denominator is that they all reside within a five mile radius to Berea. To put this in perspective, that's more than was diagnosed all last year."
Officials at the Madison County Health Department have given out these notices to area doctors reminding them to test any patients with the symptoms of salmonella.
Knowing who has it is key to finding a source.
Green continues, "it is a food borne illness. We do know it comes from under-cooked meat. People should avoid cross contamination, and wash their hands."
The symptoms of salmonella are nausea, diarrhea, and fever.
They can last up to a week and usually pass without treatment.
In rare cases, an infection can be fatal.
That's not the case in Madison County and officials hope it stays that way.
In the meantime, they'll stay on the lookout, looking for a common factor, and ways to prevent others from getting sick.
There were no new reports of salmonella infections in the Madison County area over this past weekend.