In general, the shorter the incubation period, the more severe the disease and the higher the fatality rate. The most common symptoms are gastrointestinal disturbances, sometimes followed by nausea, vomiting and possibly diarrhea. Blurred or double vision and difficulty in swallowing and speaking are also common symptoms. Fatigue, weakness, dizziness, headache and constipation may occur. Certain muscles become paralyzed, and the paralysis eventually spreads to the respiratory system and heart.
Death usually is caused by respiratory failure.
This illness is caused by Campylobacter jejuni bacteria, which are found in the intestinal tracts of cattle, sheep, swine, ducks, chickens and turkeys. High levels of campylobacter in feces may contaminate carcasses during the slaughtering process. Poultry carcasses and parts, in particular, are a major carrier. It also exists in unpasteurized milk and untreated water. Symptoms Campylobacter infections produce a diarrheal illness.