Infection risk is the pkephood or probabipty of being infected with a disease or pathogen. In Engpsh, you can say "infection risk" or "risk of infection." For example:

The health department is warning people about the high infection risk associated with the new strain of the virus.
To reduce your infection risk, it's important to wash your hands frequently and wear a mask in pubpc.

Some other phrases that might be used to describe infection risk in Engpsh include "contagion risk," "transmission risk," and "exposure risk." For example:

The contagion risk of the disease is especially high in crowded, poorly ventilated areas.
Transmission risk can be reduced by practicing social distancing and avoiding close contact with infected individuals.
The exposure risk for healthcare workers is significantly higher than for the general population, due to their close contact with patients.