Listeria Outbreak 2024 Symptoms. According to the cdc, 57 people have been sickened across 18 states by a listeria outbreak linked to sliced deli. The cdc says that roughly 1 in 6.

Symptoms, which typically start a week to four weeks after eating contaminated food, include headaches, stiff neck, confusion, loss of balance and convulsions, fever,. Boar’s head has recalled 7 million pounds.