what happens if you get salmonella

If you get salmonella, you usually develop a short-term gut infection that can make you feel quite unwell but often gets better on its own within about a week. In some people, especially very young children, older adults, pregnant people, and those with weak immune systems, it can lead to serious dehydration or spread beyond the gut, which can be dangerous.

Quick Scoop: What Happens If You Get Salmonella?

How salmonella affects your body

Salmonella is a bacteria that infects your intestines, usually after you eat or drink something contaminated (like undercooked chicken, raw eggs, unpasteurised milk, or food handled with poor hygiene). Once inside, the bacteria irritate your gut lining, which triggers inflammation and the classic “food poisoning” symptoms.

Most people start to feel sick a few hours to a few days after exposure (commonly 6 hours to 6 days). The illness is usually acute — it hits hard, then gradually improves over 3–7 days, although your bowel habits can take longer to fully return to normal.

Common symptoms you might feel

Typical salmonella infection (salmonellosis) looks a lot like a bad stomach bug.

Most common symptoms:

• Watery diarrhoea, sometimes with blood or mucus.

• Stomach or abdominal cramps that can be quite painful.

• Fever, often mild to moderate.

Other possible symptoms:

• Nausea and vomiting.

• Headache, chills, and feeling generally wiped out.

• Loss of appetite.

• Blood in the stool in some cases.

Timeline:

• Symptoms start: usually 6 hours to 3–6 days after infection.

• Illness length: usually 3–7 days; diarrhoea can last up to 10 days.

• Gut recovery: bowel habits can take weeks to fully normalise in some people.

Think of it like your gut going into “emergency mode” to flush out the bacteria — lots of fluid, rapid bowel movements, and a general sense that your whole body is fighting something off.

When it can get serious

Most healthy people recover at home with rest and fluids and never need antibiotics. But salmonella can become serious in certain situations.

Dehydration

Heavy diarrhoea and vomiting can cause your body to lose a lot of water and salts. This is the biggest immediate risk.

Warning signs of dehydration:

• Peeing much less than usual or very dark urine.

• Dry mouth and tongue, sunken eyes, no tears when crying (in kids).

• Feeling dizzy, very tired, irritable, or confused.

Infection spreading beyond the gut

In a small minority of cases, the bacteria can move from the intestines into the bloodstream and cause more widespread infection. This is more likely if:

• You are very young, elderly, pregnant, or have a weakened immune system.

• You have serious underlying conditions (for example, certain heart or joint problems).

In these cases, salmonella can, rarely, become life-threatening and may require hospital treatment and antibiotics.

Longer-term complications (less common)

A few people develop issues even after the gut symptoms settle:

• Ongoing bowel changes, with altered stool habits lasting weeks to months.

• Occasionally, joint pain or reactive arthritis after infection.

There are also special types of salmonella that cause typhoid or paratyphoid fever, which are usually more severe systemic illnesses, typically linked to travel or areas where these strains circulate.

When you should see a doctor

You should seek medical advice urgently (or go to emergency care) if you have any of the following:

• Diarrhoea or vomiting lasting more than 2 days with no improvement.

• Blood in your stool or urine.

• A fever higher than around 102°F (about 38.9°C).

• Signs of dehydration (very little pee, dark urine, extreme thirst, dizziness, confusion).

• Severe stomach pain or swelling.

• You are pregnant, elderly, very young, or have a weakened immune system and feel very unwell.

A doctor may send a stool sample to confirm the diagnosis and, in serious cases, consider antibiotics or hospital care.

What you can do at home

For a straightforward salmonella infection in an otherwise healthy person, home care usually focuses on not getting dehydrated and letting the infection run its course.

Helpful steps:

1. Drink plenty of fluids
   • Water, oral rehydration solutions, or clear broths are ideal.

2. Eat lightly if you can
   • Small, simple meals (toast, rice, bananas) as tolerated.

3. Rest
   • Let your body focus its energy on fighting the infection.

4. Be careful with anti-diarrhoea medicines
   • Some over-the-counter medicines are not suitable for everyone and can occasionally be risky if you have high fever or bloody diarrhoea, so check with a healthcare professional first.

Avoid: preparing food for others while you’re sick and for a short time after, as the bacteria can spread via tiny traces of stool.

How people usually catch it (and avoid it)

Salmonella is a classic foodborne infection, so what happens to you often starts with what happened in the kitchen or food chain.

Common sources include:

• Undercooked poultry or meat.
• Raw or lightly cooked eggs and foods containing them.
• Unpasteurised milk or dairy products.
• Contaminated fruits, vegetables, or ready-to-eat foods.
• Cross-contamination (for example, raw chicken juice touching salad).

To reduce the risk:

• Cook meat, especially poultry, thoroughly.
• Avoid raw eggs and unpasteurised dairy.
• Wash hands, utensils, and surfaces after touching raw meat or eggs.
• Keep raw and ready-to-eat foods separate.

Bottom note: Information gathered from public forums or data available on the internet and portrayed here.