CORRESPONDENT, DOCTOR DARIAN SUTTON, TO TALK MORE ABOUT IT. THANK YOU SO MUCH FOR BEING HERE. THIS MORNING. FIRST QUESTION, WHAT'S GOING ON? HOW DID IT BECOME SO WIDESPREAD WHEN RECALLS WERE ISSUED? RIGHT. >> YEAH, RECALLS WERE ISSUED. AND WE TYPICALLY SEE ABOUT 1600 CASES OF LISTERIA EACH AND EVERY YEAR. AND THE REASON WHY THIS IS SUCH A TRICKY BACTERIA IS BECAUSE IT LIVES IN REFRIGERATED TEMPERATURES. MOST BACTERIA, YOU DON'T SEE THEM MULTIPLYING WHEN THINGS ARE REFRIGERATED, BUT FOR LISTERIA IT CAN PROPAGATE. IT CAN LIVE AND CAUSE INFECTION. SO WHAT DO PEOPLE NEED TO KNOW ABOUT LISTERIA? WHAT ARE THE SYMPTOMS. BECAUSE HOW DO YOU EVEN KNOW IF YOU HAVE IT OR NOT? YEAH THAT'S A GOOD POINT. SO THE SYMPTOMS ARE MOST OFTEN INITIALLY ASSOCIATED WITH GI SYMPTOMS LIKE NAUSEA VOMITING DIARRHEA. BUT IT CAN ALSO PROGRESS TO SOMETHING CALLED INVASIVE LISTERIA, WHICH WHEN IT CAUSES A SEPSIS OR A SYSTEMIC WHOLE BODY INFECTION THAT CAN BE ASSOCIATED TO SIGNS OF A HEADACHE, A STIFF NECK AND SIGNS OF MENINGITIS. IT REALLY FOCUSES ON WHO IS AT RISK. MOST AT RISK INCLUDE PREGNANT PEOPLE, PREGNANT PEOPLE, FOR EXAMPLE. WOMEN ARE MORE THAN TEN TIMES MORE LIKELY TO GET INFECTED, AND THEY ADVISE AGAINST EATING DELI MEATS. ONE OF THE REASONS WHY THEY ADVISE GOOD REASON, A GOOD REASON, >> SO HOW DO YOU BEST PROTECT YOURSELVES? BECAUSE I HAVE TO TELL YOU, WE USE DELI MEAT ALL THE TIME. THE KIDS ARE GOING TO CAMP. IT'S THE EASIEST MEAL FOR YOUR CHILD. DO I STAY AWAY FROM BOAR'S HEAD? LIKE, WHAT DO WE DO AFTER SOMETHING LIKE THIS? SO. RIGHT NOW, IT'S GOING TO BE MORE DATA TO UNDERSTAND EXACTLY WHAT BRAND IS ASSOCIATED. >> BOAR'S HEAD HAS BEEN BROUGHT UP, SO WE'VE GOT TO BE MORE CAUTIOUS. I THINK IT'S FOCUSING ON THOSE WHO ARE HIGH RISK PREGNANT WOMEN, ELDERLY PEOPLE, THOSE ON DIALYSIS FOR THE MOST PART, IT WOULD GENERALLY BE OKAY. BUT I THINK OVERALL TO BE SAFE, MAKE SURE THAT YOU HEAT YOUR MEAT UP. IF YOU'RE GOING TO USE IT UP TO 160 TO 165 DEGREES, THAT CAN HELP DESTROY YOU. >> EVER HAD A FRIED SALAMI SANDWICH? >> TODAY IS THE DAY TO TRY IT. IT'S REALLY FUN. >> WE HAVE SOME FRIED SALAMI HERE, BY THE WAY. >> WE'RE GOING TO GET TO IT. YEAH. SO IT'S IRONIC YOU SAY THAT I'M GOING TO STAY FOR THAT IF YOU CAN HAVE SOME. IF WE COULD REALLY QUICKLY CAN WE BRING THAT UP, THAT IMAGE WE JUST SHOWED THERE BECAUSE IT SHOWS THE NUMBERS. CAN YOU JUST EMPHASIZE TO PEOPLE THAT THIS IS SERIOUS TO TAKE A SERIOUS WE'RE TALKING THREE PEOPLE DIED RECENTLY. A MAN IN NEW JERSEY. AND YOU HAD 43 CASES OF PEOPLE INFECTED. YEAH. >> IT'S VERY SERIOUS. A LOT OF PEOPLE ASSOCIATE THIS WITH A BENIGN OR MILD INFECTION. FOR THE MOST PART, MANY PEOPLE NEED TO BE HOSPITALIZED. SO I THINK AT THE EARLIEST SIGN, IF YOU NOTICE THAT YOU'RE HAVING SYMPTOMS, SEE A PROVIDER GET CHECKED MOST OFTEN, YOU CAN TREAT THEM WITH JUST BASIC SUPPORTIVE MEASURES STAYING HYDRATED. BUT IF YOU ARE AT RISK, IF YOU WERE PREGNANT ON DIALYSIS OVER THE AGE OF 65 AND YOUR SYMPTOMS ASSOCIATED WITH A POSSIBLE EXPOSURE, YOU SHOULD GET HELP QUICKLY. >> I'M SO GLAD THAT YOU GAVE US A LITTLE FOCUS ON WHO THIS REALLY IMPACTS THE MOST, SO THAT YOU KNOW ME, I'M, YOU KNOW, SLAPPING SOME BREAD TOGETHER