Final answer:
In general, a licensee cannot refuse to serve a client based on their belief about their health status. However, there may be exceptions when the refusal to serve is justified on public health grounds to protect others.
Step-by-step explanation:
In general, a licensee cannot refuse to serve a client solely based on their belief that the client has an infectious, contagious, or communicable disease. Discrimination based on health status is illegal in many jurisdictions. However, there may be certain exceptions when the refusal to serve is justified on public health grounds to protect the health of others.
For example, a licensee might have the right to refuse service if there is a clear and immediate risk of transmission of a highly infectious disease, such as in the case of an outbreak of a deadly virus with no treatment. In such cases, temporary measures such as quarantine or isolation may be imposed to prevent the spread of the disease.
However, it is important to note that any decision to refuse service based on beliefs about a client's health should be made in consultation with public health officials or legal authorities to ensure that it is justified and in compliance with applicable laws and regulations.