What Is a Salmonella Infection?
Salmonella infection is a bacterial illness that usually affects the digestive system. It is commonly spread through contaminated food, water, or contact with infected animals or surfaces.
Salmonella infection is most often linked to:
- Undercooked poultry, eggs, or meat
- Unpasteurized milk or dairy products
- Contaminated fruits and vegetables
- Poor handwashing
- Contact with reptiles or birds
- Contaminated food or water during travel
Most infections cause diarrhea and stomach symptoms that improve within several days. In some cases, especially for young children, older adults, or people with weakened immune systems, the infection can become more serious.
Symptoms
Symptoms often begin within a few hours to a few days after exposure to the bacteria.
Common symptoms include:
- Diarrhea
- Fever
- Stomach cramps
- Nausea or vomiting
- Headache
- Chills
- Fatigue
Severe illness may lead to dehydration or spread beyond the intestines.
How Is It Diagnosed?
Healthcare providers diagnose salmonella infection by reviewing symptoms and possible exposure sources. Laboratory testing is used to confirm the infection.
Testing may include:
- Stool cultures
- Blood tests in severe cases
These tests help identify the bacteria and guide treatment if symptoms become serious.
How Is It Treated?
Many salmonella infections improve without antibiotics. Treatment usually focuses on preventing dehydration and helping the body recover.
Common treatments include:
- Drinking plenty of fluids
- Rest
- Electrolyte replacement
- Medicines to manage fever or discomfort
Patients with severe illness, dehydration, or weakened immune systems may need IV fluids, antibiotics, or hospital care.
Most healthy people recover within several days to a week. Proper food handling and hand hygiene can help prevent future infections.
