Two children attend the same preschool, but one child is at the facility on Mondays and Wednesday, while the other child attends the facility on Tuesdays and Thursdays. Both children become ill with Erythema infectiosum within a day of each other. What is this type of pathogenic transmission called

Fomite transmission.

Explanation:

This is a form of indirect transmission. This type of transmission occurs when inanimate object are involved in the indirect transfer of the pathogens to an uninfected host.

The inanimate object is often referred to as fomites.

In this example, the facilities in the daycare would be the fomites involved in the indirect transfer of the pathogen from one child to the other child.