Stuck myself with a needle

Were you told to stay home by occupational health/employer health? Deciding on your own to stay home does not trigger worker's compensation wages. Worker's compensation will pay for testing and treatment directly related to a work place injury or illness. (lab work, follow up testing, medications and counseling related to testing schedule, medications, risks&side effects, etc.)

As far as exacerbation of a prior health condition this would have to be determined by the employee/occupational health physician in conjunction with your treating physician. It's possible but not guaranteed.

If the injury or illness puts you in a position where you cannot work as a result of illness/injury then workers comp pays wages. For example a coworker contracted chicken pox from a client and was too ill to work due to illness and isolation. She was paid by WC for time missed due to illness as well as medical treatment. as certified and ordered by employee health.

A friend had a workplace accident whereby had a compound proximal humerus fracture due to a fall (related to an unsafe work area!). She was covered for all testing, treatment, surgery, and rehab as well as time off because the reason for not working was directly due to a workplace injury as certified by the occupational health physician.

Contact the HR person at your workplace for guidance. Your health insurance plan, or a plan thru HR, may also offer counseling in the form of employee assistance program. I wish you luck and good health.