There are numerous synonyms for the phrase "catch the infection." Some of the commonly used phrases include acquiring an infection, contracting a disease, falling ill, becoming infected, and getting sick. Other less common phrases include coming down with an illness, getting struck down with an affliction, catching a bug, and succumbing to a contagion. These synonyms are used interchangeably to suggest the act of being affected by a disease or illness, typically through exposure to a virus or bacteria. Hence, it is crucial to stay safe from infections by maintaining good hygiene practices, getting vaccinated, and following proper health guidelines.