My kitchen sponge and cutting board harbor the biggest dangers, as do places like elevator buttons, communal coffee carafes and gym equipment, that are touched by many hands and are rarely cleaned.

• 厨房里的洗碗布和切菜板存在最大的危险，同样，像电梯按钮、公共的咖啡壶和健身房器械也是如此，这些东西很多人都会接触，而很少清洁。