Final answer:
Salmonella is the bacterium commonly linked to raw poultry and raw eggs, causing salmonellosis, which is prevented by proper cooking and hygiene.
Step-by-step explanation:
The illness mainly associated with raw poultry and raw shell eggs is salmonellosis, which is caused by the Salmonella bacterium. This bacterium is a part of normal intestinal microbiota in many animals, including poultry. Infection with Salmonella can occur through ingestion of contaminated food, including raw or undercooked poultry, raw shell eggs, unpasteurized milk, and even contaminated water. Proper cooking and handwashing are essential practices to reduce the risk of Salmonella infection, which can present symptoms ranging from mild gastrointestinal issues to severe illness.