We are trying to come up with a rational approach to screening contractors who come into the hospital – plumbers, electricians, other trades.  Most of them
 will only be working the hospital for relatively short periods of time.  
We are considering the following:
1: Hepatitis B surface antibody titer and offer the first vaccination if not immune
2: Respirator fit test
3:
Measles, mumps and rubella:  Titers indicating immunity or proof of two  MMR vaccinations
4: Tuberculosis:  Negative T-spot, or negative Two-step PPD (TST)
5: Varicella: Titer indicating immunity or proof of two varicella vaccinations
6: 10-panel drug screen
Overall, the panel seems defensible.  I am curious if your institution has a similar approach?
(The one question I have at the moment is the need for the Hepatitis B surface antibody testing/vaccination.  Contractors should
 not be having direct patient contact, so the chance of transmitting/contracting Hepatitis B seems remote.  However, I wonder if Hepatitis B surface antigen would make more sense, because if they get injured, they might bleed and be a source of transmission
 of Hepatitis B. )
Any thoughts would be welcome.
Scott Grubbs, MD
WorkWell Occupational Health
Greenville, SC