Blue Bell

The Centers for Disease Control and Prevention announced Wednesday that its investigation of a multi-state outbreak of listeria linked to Blue Bell Creameries is complete, but warned that some customers may still be at risk.

The company took to social media to offer an explanation after photos surfaced online from concerned citizens.

Blue Bell Creameries announced Thursday that it has signed voluntary agreements with state regulatory agencies that outline strict testing, cleaning, production, and distribution requirements following recent recalls due to listeria contamination.

A government investigation has revealed that Blue Bell  was aware of listeria contamination in one of its plants as early as two years ago, but did not issue recalls.