An ongoing salmonella outbreak from an unknown food source has spread to 29 states, federal health officials warned.

The outbreak has infected nearly 280 people and more than two dozen have been hospitalized, according to the Centers for Disease Control and Prevention's (CDC) latest update, which was issued on Sept.

Still, there have been no deaths associated with the "fast-growing outbreak," according to the CDC.

The agency created a map showcasing where people impacted by the salmonella outbreak live. 

However, the agency cautioned that the map may not represent all of the cases "because many people recover without medical care and are not tested for salmonella."   

The CDC said officials in several states have been collecting data as part of a multistate investigation into an outbreak of salmonella oranienburg infections. 

The agency added that officials have been collecting and testing food items from restaurants "where sick people ate" but have not yet identified a "food linked to illness."