An electron microscope image of a Listeria monocytogenes bacterium, which has been linked to an outbreak spread through deli meat. Boar's Head recalled meat on Friday, after two deaths and 33 hospitalizations linked to Listeria.

An electron microscope image of a Listeria monocytogenes bacterium, which has been linked to an outbreak spread through deli meat. Boar's Head recalled meat on Friday, after two deaths and 33 hospitalizations linked to Listeria. / Centers for Disease Control and Prevention

Boar’s Head is recalling more than 200,000 pounds of deli meat that could be contaminated with listeria, the Food Safety and Inspection Service announced Friday.

The recall includes all Liverwurst products, as well as a variety of other meats listed in the FSIS announcement. The CDC has identified 34 cases of Listeria from deli meat across 13 states, including two people who died as of Thursday. The statement also said there had been 33 hospitalizations.

The CDC warns that the number of infections is likely higher, since some people may not be tested. It can also take three to four weeks for a sick individual to be linked to an outbreak.

Listeria is a foodborne bacterial illness, which affects about 1,600 people in the U.S. each year, including 260 deaths. While it can lead to serious complications for at-risk individuals, most recover with antibiotics. Its symptoms typically include fever, muscle aches and drowsiness,

The CDC says people who are pregnant, aged 65 or older, or have weakened immune systems are most at risk. It suggests that at-risk individuals heat any sliced deli meat to an internal temperature of 165°F.

The investigation from the CDC and FSIS is ongoing. This is not the first listeria outbreak of the summer, as more than 60 ice cream products were previously recalled during an outbreak in June.