RICHMOND, Va. (AP) — Virginia health officials say several recent cases of hepatitis A may have been caused by frozen strawberries from a smoothie chain.

The Virginia Department of Health says testing indicates frozen strawberries from Egypt used at Tropical Smoothie Cafe stores may be to blame for the illnesses.

Tropical Smoothie Cafe it stopped using strawberries from Egypt at all of its stores, including those outside Virginia, after learning about the potential issue. The smoothie chain says the cafes and their food handling practices “have not been implicated in any way.”

Health officials are encouraging anyone who consumed a smoothie with frozen strawberries at a restaurant in the last 50 days to watch for symptoms of hepatitis A. Those include jaundice, fever, fatigue, loss of appetite and nausea.