This document is in Spanish. "Avian flu is a viral disease and it can be very contagious and even deadly in poultry (e.g., chickens). Of great concern are the highly pathogenic avian influenza (HPAI) H5N1 viruses which have killed millions of birds and infected humans in other countries. If these viruses are found in the U.S. or if you are a U.S. employee working in a country known to have HPAI H5N1 outbreaks, take appropriate precautions."
Occupational Safety & Health Administration: http://www.osha.gov/