What do you mean by "association with a person with a disability"?

For example, if I do not have a disability, but I work in an HIV clinic, it would not be legal for someone to discriminate against me based on the fact that I work with, or “associate” with, people who have HIV.

For additional information, take a look at the following resources:

FAQ: What is the definition of disability under the ADA?

FAQ: What does “regarded as” having a disability mean?