Table 1.
Principal agents shown to cause occupational asthma in various countries
na, data not available.
*Medico-legal statistics; †Voluntary notification programs; ‡Unpublished data derived from the Belgian Workers' Compensation Board.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.