Campylobacter is a type of bacteria that can cause an intestinal infection called campylobacteriosis. It is one of the most common causes of foodborne illness and is often linked to contaminated food or water.
This infection mainly affects the digestive system and can lead to symptoms such as diarrhea, stomach pain, and fever. In most cases, symptoms are mild and improve on their own, but some people may develop more severe illness or complications.
Treatment usually focuses on staying hydrated and getting enough rest, although antibiotics may be needed in certain situations. Medical care is recommended if symptoms are severe, last longer than expected, or occur in people at higher risk of complications.
Main symptoms
Campylobacter infection mainly affects the digestive system and can cause symptoms that range from mild to severe.
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Diarrhea, which may be watery or contain blood
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Abdominal pain or cramping
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Fever
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Nausea
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Vomiting
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General fatigue
Symptoms usually appear a few days after exposure and tend to last about a week. Most people recover fully without long-term effects.
Causes and how it is transmitted
Campylobacter infection is typically caused by ingesting the bacteria through contaminated food, water, or through contact with infected animals.
Common sources of infection include raw or undercooked poultry, which is one of the main ways the bacteria spreads. Other sources include unpasteurized milk or dairy products, contaminated drinking water, and raw or improperly handled meat.
In addition to food-related exposure, campylobacter can also be transmitted in other ways. Cross-contamination in the kitchen is a frequent cause, especially when raw poultry comes into contact with ready-to-eat foods. Contact with infected animals, including pets such as puppies, can also spread the bacteria. Travel to areas with poor sanitation increases the risk of exposure as well.
Even a small number of bacteria can cause infection, which is why proper food handling and hygiene practices are especially important.
Confirming a diagnosis
Diagnosis is usually based on symptoms and confirmed with laboratory testing. Doctors may suspect campylobacter infection when a person has diarrhea, fever, and abdominal pain, especially after eating high-risk foods.
A stool sample is typically used to confirm the infection. The sample may be tested using culture methods or more advanced techniques that detect the bacteria’s genetic material.
In some cases, testing may also identify antibiotic resistance, which can help guide treatment decisions when medication is necessary.
Treatment options
Treatment for campylobacter infection depends on how severe the symptoms are.
Most cases improve without specific treatment. Care usually focuses on staying well hydrated by drinking plenty of fluids and getting enough rest to support recovery. In some cases, oral rehydration solutions may be recommended, especially for children or older adults, to help replace lost fluids and electrolytes.
Antibiotics may be used in more severe cases or for people at higher risk, such as older adults, people with weakened immune systems, or those with severe or long-lasting symptoms. The choice of antibiotic depends on resistance patterns, and not all campylobacter infections require medication.
Prevention
Preventing campylobacter infection mainly involves proper food handling and good hygiene practices.
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Cook poultry thoroughly and avoid eating undercooked meat
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Wash hands after handling raw food, animals, or using the bathroom
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Avoid drinking unpasteurized milk
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Use separate utensils and cutting boards for raw and cooked foods
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Drink safe, treated water
Following safe food preparation and hygiene practices is the most effective way to reduce the risk of infection.
Possible complications
Although most people recover without problems, some may develop complications.
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Dehydration due to severe diarrhea
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Reactive arthritis
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Ongoing digestive symptoms similar to irritable bowel syndrome
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Guillain-Barré syndrome, a rare condition that affects the nervous system
These complications are not common, but they highlight the importance of monitoring symptoms and seeking medical care when needed.