Salmonella infection, also known as salmonellosis, is a common bacterial illness caused by the bacterium Salmonella. These bacteria live in the intestines of humans and animals and are shed in feces (stool). When they contaminate food or water, they can infect people who consume them. Salmonella infection, also known as salmonellosis, is a common bacterial illness caused by the bacterium Salmonella. These bacteria live in the intestines of humans and animals and are shed in feces (stool). When they contaminate food or water, they can infect people who consume them.
Symptoms usually begin 6–72 hours after exposure and may include:
People most often get Salmonella infections from the following sources:
Doctors diagnose Salmonella infection mainly through medical history, symptoms, and laboratory tests.
Certain people and situations increase the risk of getting a Salmonella infection or developing a more serious illness:
Treatment focuses on symptom relief and preventing dehydration:
Treating Dehydration: Treating dehydration is an important part of managing Salmonella infection. Mild to moderate dehydration can usually be treated by drinking plenty of fluids such as water, oral rehydration solutions, and electrolyte drinks, which help replace lost fluids and essential minerals. However, if dehydration becomes severe and the person is unable to drink enough fluids, hospital care may be required, where fluids are given directly into a vein through intravenous (IV) therapy to restore hydration and electrolyte balance.
Antibiotics: Antibiotics are medicines that kill bacteria, but they are usually not needed for healthy people with Salmonella infection, as the body can often fight off the bacteria on its own. Using antibiotics unnecessarily can prolong the time a person carries the bacteria and may contribute to antibiotic resistance. They are prescribed only in selected cases, such as severe infections, when the bacteria spread to the bloodstream, or for young children, elderly individuals, or people with weakened immune systems.
Anti-Diarrheal Medicines: Anti-diarrheal medicines, such as loperamide (Imodium), can help relieve diarrhea and stomach cramps, making the person more comfortable. However, they do not kill the bacteria, and by slowing bowel movements, they may keep the bacteria in the intestines longer, potentially prolonging the infection. For this reason, doctors use them only in certain cases. Typically, for adults with mild symptoms, and avoid them in children or severe infections.