What happens if you have salmonella poisoning

On this page

  • What is salmonella?
  • What are the symptoms of salmonella?
  • What causes salmonella?
  • How is salmonella diagnosed?
  • How is salmonella treated?
  • Can salmonella be prevented?
  • Related information on Australian websites

What is salmonella?

Salmonella infection is a type of gastroenteritis (or 'gastro'). It is caused by Salmonella bacteria. It is likely to make someone feel sick, possibly with fever, diarrhoea and vomiting, and it usually lasts for 2 to 7 days.

What are the symptoms of salmonella?

Symptoms start between 6 hours and 7 days after you have been infected and may include:

  • fever
  • diarrhoea
  • loss of appetite
  • headache
  • stomach cramps
  • nausea and vomiting
  • blood or mucus in stools (poo)

What causes salmonella?

Salmonella poisoning is caused by infection with bacteria that are transferred to the mouth from:

  • contaminated food, water or the hands
  • another person's hand or a contaminated surface
  • animal faeces (poo)

Contaminated food can look and smell normal.

If you have salmonella, you should avoid contact with other people for at least 24 hours after your vomiting and diarrhoea stops.

You can spread it for as long as you carry the bacteria — which may be months after you stop having any symptoms. Read more about food poisoning.

How is salmonella diagnosed?

You should see a doctor if the infection is making you or your child dehydrated or if it causes:

  • fever
  • severe abdominal pain
  • bloody diarrhoea

If you think your baby has salmonella, you should consult a doctor immediately.

Diagnosis is made by collecting a stool (poo) sample to test for the bacteria.

How is salmonella treated?

You should drink a lot of fluids such as water or oral rehydration drinks (from your pharmacist).

Most people recover within about a week and do not need antibiotics. However, antibiotics may be prescribed for young children or older people.

Avoid medicine to prevent vomiting or diarrhoea, unless recommended by your doctor.

Watch out for dehydration in both adults and children. If a baby has salmonella, continue breastfeeding. If they are formula fed, continue feeding after rehydrating them with oral rehydration solution.

Can salmonella be prevented?

The best way to prevent salmonella is to:

  • handle and cook food safely
  • wash your hands after going to the toilet, before and after preparing food, changing nappies and after touching animals
  • take care in selecting, preparing and eating high-risk foods such as raw or incompletely cooked eggs, unpasteurised milk and incompletely cooked chicken

Salmonella infections are common in Asia, the Pacific islands, Africa, the Middle East and Central and South America. If you travel to these parts, avoid foods that may be contaminated such as salads and fresh fruit salads, raw or cold seafood, or cold meat. In these areas, use bottled water for drinking and for brushing teeth. Do not have ice in drinks or washed or cut fruit.

Learn more about travel health, good hand hygiene and handling food safely.

Causes and Symptoms of Salmonellosis

Salmonellosis is an infection with a bacteria called Salmonella, Salmonella live in the intestinal tracts of animals, including birds. Salmonella are usually transmitted to humans by eating foods contaminated with animal feces.

Every year, approximately 40,000 cases of salmonellosis are reported in the United States. Because many milder cases are not diagnosed or reported, the actual number of infections may be thirty or more times greater. Approximately 700 to 925 cases of salmonellosis are reported each year in Minnesota.

On this page:
Fact Sheets
Symptoms
Duration of Illness
Transmission

Fact Sheets

  • Salmonellosis Fact Sheet
    Answers to frequently asked questions about Salmonellosis.
  • Salmonella Infections
    CDC fact sheet that answers some common questions about Salmonellosis.
  • Typhoid Fever
    CDC fact sheet that answers some common questions about Typhoid Fever (Salmonella typhi).

Symptoms

Symptoms include:

  • diarrhea
  • abdominal pain and cramps
  • fever

Symptoms usually begin within 12 to 96 hours after exposure, but can begin up to 2 weeks after exposure.

Duration of Illness

  • Salmonella infections usually resolve in 5-7 days.

Transmission

Contaminated foods are often of animal origin, such as poultry, pork, beef, poultry, milk, or eggs, but all foods, including vegetables may become contaminated.

Many raw foods of animal origin are frequently contaminated, but fortunately, thorough cooking kills Salmonella.

Food may also become contaminated by the unwashed hands of an infected food handler, who did not wash his or her hands adequately after using the bathroom.

Salmonella may also be found in the feces of some pets, and people can become infected if they do not wash their hands after contact with animals.

  • Reptiles and baby chicks/ducklings are particularly likely to harbor Salmonella.
    • People should always wash their hands immediately after handling these animals.
    • Adults should also be careful that children wash their hands after handling a reptile.

Do you suspect that you have a foodborne or waterborne illness? Visit reporting suspected foodborne/waterborne illnesses.

Last Updated: 10/05/2022

What kills salmonella naturally?

  • Wash Hands and Surfaces Often
  • Wash your hands, cutting boards, dishes etc with hot soapy water before handling food.
  • Separate raw meat, poultry, and seafood from other foods in your refrigerator.
  • Cook to Proper Temperatures, at least 160°F (72°C) internal temp
  • Refrigerate Promptly

What are the signs and symptoms of salmonella poisoning?

What are symptoms and signs of Salmonella poisoning?

  • Symptoms of Salmonella poisoning usually begin 12-72 hours after infection.
  • Diarrhea, abdominal cramping, and fever are common symptoms.
  • The diarrhea is typically loose and not bloody.
  • Nausea
  • Vomiting
  • Headache
  • Muscle aches

Does Salmonella go away on its own?

Usually, salmonella poisoning goes away on its own, without treatment. Drink plenty of fluids in order to stay hydrated if you have diarrhea. Still, Taege recommends that you call your doctor to...

How does salmonella food poisoning affect the body?

Since people get Salmonella food poisoning by ingesting contaminated food, the stomach and digestive tract are usually affected the most. The bacteria begin to live and grow in your stomach and intestines, which causes the nausea, diarrhea, and stomach cramping. Sometimes, the bacteria can spread and begin to live in your blood stream.

Can Salmonella go away on its own?

Most people don't need to seek medical attention for salmonella infection because it clears up on its own within a few days. However, if the affected person is an infant, young child, older adult or someone with a weakened immune system, call a health care provider if illness: Lasts more than a few days.

What are the chances of surviving Salmonella?

Mortality rate for treated cases is 2%, while complications occur in 30% of untreated cases. Morbidity and mortality increases with drug-resistant S typhi.

Can Salmonella damage organs?

Dissemination to the bloodstream depends on host factors and virulence of the Salmonella strain and occurs in less than 5% of infections. If the infection spreads to the bloodstream, any organ can become infected (e.g., liver, gallbladder, bones, or meninges).

Do you get hospitalized for Salmonella?

How is salmonella treated? You usually don't treat salmonella with medication. If you're severely ill or at high risk for complications, your healthcare provider will treat you with antibiotics. If you have severe diarrhea, you may need to be hospitalized.