WBRZ - Baton Rouge

BATON ROUGE - A fourth case of E. Coli linked to an outbreak across the South has been reported in Louisiana.

As of right now the source the outbreak is unknown. The youngest victim of the outbreak so far is a 21-month-old toddler from New Orleans, who died last week.

"We know that the cases are all linked and that there is a common source, we just don't know where," said J. Patrick O'Neal with the Georgia Department of Public Health

E. Coli is often associated with undercooked ground beef or produce. People can protect themselves by washing their hands after handling chicken, thoroughly washing vegetables and cooking chicken and beef completely.

"We watch everything that we buy, and produce and meat," said Baton Rouge resident Linda Howard. "We're very careful about where we buy it from."

State epidemiologists suspect food is to blame, but they're working with the CDC to find the exact source.

If you have symptoms such as diarrhea, fever and extreme fatigue after eating, immediately consult a doctor.