Final answer:
Campylobacter infection is mainly acquired through the ingestion of food or water contaminated with Campylobacter jejuni, especially poorly handled or undercooked poultry and unpasteurized milk.
Step-by-step explanation:
Campylobacter infection, often caused by Campylobacter jejuni, typically occurs via ingestion of contaminated water or food. This bacterium is a common cause of gastroenteritis worldwide, and infection can lead to symptoms such as fever, diarrhea, cramps, and vomiting. While most cases are self-limiting, severe complications like Guillain-Barré syndrome may occur. The bacterium is primarily transmitted through contaminated poultry, which can affect various surfaces and foods during handling. Additionally, the consumption of unpasteurized milk and exposure to contaminated water are significant sources of infection. Transmission through person-to-person contact can also occur, particularly in environments like day-care centers where hygiene practices may be less stringent.