What type of soap is not recommended for health care workers due to contamination risks?

The choice of plain bar soap being not recommended for healthcare workers is primarily due to contamination risks associated with its use. Bar soap can harbor bacteria on its surface since it is handled by multiple people, which can lead to cross-contamination. When a healthcare worker uses a bar of soap, their hands can transfer bacteria to the soap, which may then be transferred to the next user.

In contrast, liquid soaps and foaming soaps provide a more hygienic alternative since they are dispensed from a container in a way that minimizes direct contact and the risk of cross-contamination. Antibacterial soaps, while they do have specific ingredients meant to kill bacteria, also do not eliminate the risk of contamination in the same way liquid or foaming soaps can. This makes plain bar soap less suitable in a healthcare setting where maintaining a sterile and clean environment is crucial.