Overview of international environmental health.

Ultimately, the health and quality of life of all human beings depend upon the environment and ecosystems to which we are directly and indirectly connected. The papers in this special edition address a number of the critical environmental health issues on which U.S. government agencies and their collaborating partners are engaged internationally. The agencies are members of the International Environmental Health Subcommittee, chaired by the U.S. Department of Health and Human Services. The activities described span the range from global policy to country-level field activities. While environmental factors related to infectious disease dominate the global burden of environmentally-related disease, acute and chronic exposures to chemicals are increasingly important public health issues at the local, national, and regional levels; arsenic in drinking water is a good example. Intersectoral action involving governments (at all levels), the private sector, and civil society working together in partnership is absolutely critical to sustainably resolving the problems touched on this overview and meeting the environmental health challenges of the twenty-first century.