The Centers for Disease Control and Prevention is investigating a multistate Salmonella outbreak that has spread to at least 25 states and sickened over 100 people.

The CDC said the Salmonella outbreak is “fast-growing” and has not been linked to any one specific food source.

A total of 127 people have been sickened by the outbreak, and it is believed that many more people may have been infected and recovered without medical care.

Of those who did become ill with Salmonella infections, 18 were hospitalized from their illness. No deaths have been reported.

The 25 states that have been infected by the outbreak include: California, Utah, New Mexico, North Dakota, South Dakota, Nebraska, Kansas, Oklahoma, Texas, Minnesota, Iowa, Missouri, Arkansas, Wisconsin, Illinois, Michigan, New York, Pennsylvania, Maryland, Virginia, North Carolina, South Carolina, New Jersey, Massachusetts, and Connecticut.

Recent illnesses may not have been reported yet, the CDC said, as it takes up to four weeks to determine if a person who is sick with Salmonella is part of an outbreak.

Symptoms of Salmonella include diarrhea, fever higher than 102° F, bloody diarrhea, vomiting, and signs of dehydration.

Persons that show symptoms of Salmonella infection are urged to seek treatment from a healthcare provider and report their illness to their health department as part of this investigation.

To prevent Salmonella infections, always wash hands, surfaces, and utensils as well as fruits and vegetables before eating, cutting, and peeling. Keep food that won’t be cooked away from raw meat, poultry, and seafood, and cook food to a temperature high enough to kill germs. Also, be sure to refrigerate perishable foods within two hours and thaw foods in the refrigerator and not the counter.

Salmonella bacteria This photo, dated Aug. 7, 2009, under a very high magnification of 12000X, colorized scanning electron micrograph shows a large grouping of gram-negative salmonella bacteria. Photo: Reuters/Janice Haney Carr/CDC/Handout