Hospitals can make patients sick due to poor hygiene and sanitation. Around 100,000 people in the US die from infections contracted in hospitals each year, compared to less than 50,000 traffic deaths. Hospital floors, walls, doors, and medical equipment are often not properly cleaned. Food carts and trays can be contaminated. Doctors and nurses may neglect to clean equipment like stethoscopes between patients or wash hands before putting on gloves. Consumer groups advise patients to demand cleanliness and report unsanitary conditions, though some patients are reluctant to confront medical staff.