A nationwide salmonella outbreak from a mysterious source has now spread to 29 states, according to an update from the Centers for Disease Control and Prevention (CDC). The outbreak has sickened nearly 280 people and more than two dozen have been hospitalized, said the federal health agency in its latest update on Sept. 23. About 152 more cases were reported since the last update, the agency wrote on Twitter, adding that “the source remains unknown, but investigators are working quickly to identify a food linked to [the] illness.” There have been no deaths associated with the “fast-growing outbreak,” said the CDC. To date, Texas has the most reported illnesses at 81, followed by Illinois and Virginia, where 23 and 22 people have been sickened, respectively, the CDC said. On Sept. 2, the CDC identified approximately 20 salmonella infections before the total number of reported cases rapidly increased. In another update, …