cross infection (noun)

1. During World War I, many soldiers in the trenches were at high risk of cross infection due to the unsanitary conditions.

2. In the magical realm of Elondria, a wizard's spell went wrong, causing a cross infection among the fairies and the enchanted creatures.

3. In the popular anime series 'Medical Warriors,' the protagonist battles against powerful cross infections that threaten the lives of patients in a futuristic hospital.

4. The painting titled 'Cross Infection' beautifully depicts the chaotic spread of diseases within a hospital setting, evoking a sense of urgency and concern.