Final answer:
Hospital employees are most at risk of infection through contact transmission due to exposure to infected body fluids and contaminated surfaces.
Step-by-step explanation:
As a hospital employee working on the medical unit at a children's hospital, the client is most susceptible to infection by contact mode of transmission. This is especially true considering health-care workers' interaction with infected body fluids, such as blood, semen, and saliva. These fluids can commonly transmit infections through activities like IV drug use, transfusions, sexual transmission, and treating infected patients.
Moreover, contact with contaminated tools and surfaces, such as doorknobs and medical equipment, can facilitate the spread of infection. Hospitals emphasize protocols to reduce risks such as utilizing gloves, face protection, and proper sterilization techniques.