On March 20, Valley Voices and the UC Merced Farm Labor Center presented a proposal to revise the Zoonotic Aerosol Transmissible Disease Standard (Zoonotic ATD) to the monthly meeting of the Cal/OSHA Standards Board and formally submitted Petition 608 to the Board on March 21.  The petition calls for employer-paid sick leave (over and above 40 hour/five day paid sick leave already required in the Labor Code) for the ostensible purpose of removal of an ill employee from the workplace and facilitation of isolation for ill employees.  There are no known instances of human to human transmission of H5N1.  The petition also envisions employer-provided broad-based exposure testing of dairy employees for H5N1 that the California Department of Public Health lacks the resources to support, and tighter occupational safety requirements for dairies and poultry farms where H5N1 may be present.  H5N1 infections in dairy farms appears to be waning, with fewer than half as many dairies under quarantine as in January, and no new human cases reported since January.  The Board has six months from the filing date to consider whether to grant, deny or grant in part Petition 608.