Campylobacter is mostly associated with:

Campylobacter is primarily linked to contaminated food, particularly undercooked poultry, as it is one of the most common causes of bacterial gastroenteritis worldwide. The bacteria are often found in the intestines of birds, making poultry a significant source of infection for humans. Additionally, cross-contamination during food preparation and improper cooking can lead to infections.

While contaminated water can spread Campylobacter, the most prevalent transmission route remains through food, especially when it has not been cooked thoroughly. Infected birds serve as a reservoir for the bacteria, but direct contact with the birds or their droppings is less common in foodborne illness patterns compared to the consumption of contaminated food. Ticks are not a recognized vector for Campylobacter, further narrowing the focus on food-related incidents as the primary concern.

Thus, the association of Campylobacter with contaminated food highlights the importance of food safety practices to prevent infections.