Campylobacteriosis is caused by the bacteria , Campylobacter jejuni and Campylobacter coli . In industrialized countries the illness affects predominantly children older than 5 years of age and young adults. In developing countries, the persons most affected are infants and children under 2 years. Symptoms occur 2-10 days after initial exposure and are characterized by diarrhea, abdominal pain, malaise, fever, nausea and vomiting. The symptoms can vary from mild to severe.
Relapses can occur.
Blood and mucus may be present in liquid stools. An infected person can pass the infection on throughout the illness, which usually lasts from several days to several weeks. The bacteria can transfer from a primary source, such as chicken, to contaminate other foods or surfaces, including cutting boards, knives, and plates. A person may also become infected from close contact with infected puppies or kittens, farm animals or infected infants. All foods derived from animal sources, especially poultry, should be cooked thoroughly until juices run clear.