Federal health officials are investigating a foodborne illness outbreak that has sickened more than 100 people in 16 states and has been linked to salmonella-tainted mangoes.

Authorities said Wednesday they are still probing what caused an outbreak of 103 cases of salmonella Braenderup infections since July, and they are trying to identify which mango brands or sources are tied to the illnesses.

The U.S. Centers for Disease Control and Prevention says 78 of the cases were reported in California. No deaths have been reported.

The Canadian Food Inspection Agency also recently reported illnesses resulting from the same bacterial strain. Several U.S. and Canadian retailers have issued releases saying they will recall or remove Daniella-brand mangoes from stores.