CDC’s US-Mexico Unit (USMU) works to prevent the spread of infectious disease across borders and improve and promote the health of travelers, migrants, and other mobile border and binational populations. USMU’s main activities include collaborating on the US-Mexico Binational Technical Working Group, overseeing the operation of the Binational Border Infectious Disease Surveillance Program (BIDS), migrant health and binational tuberculosis programs, and international regulatory responsibilities.

The National Agricultural Workers Survey (NAWS) is an employment-based, random survey of the demographic, employment, and health characteristics of the U.S. crop labor force. The information is obtained directly from farm workers through face-to-face interviews. Since 1988, when the survey began, over 53,000 workers have been interviewed.  The survey is funded by the United States Department of Labor.