"Often called “the voice of CDC,” the MMWR series is the agency’s primary vehicle for scientific publication of timely, reliable, authoritative, accurate, objective, and useful public health information and recommendations." See the MMWR web site for state health statistics, reports, surveillance summaries, etc.
National Institute of Environmental Health Sciences
The National Institute of Environmental Health Sciences (NIEHS), is one of 27 research institutes and centers that comprise the National Institutes of Health (NIH), U.S. Department of Health and Human Services (DHHS). The mission of the NIEHS is to discover how the environment affects people in order to promote healthier lives. Visit their web site for more research, health tips, fact sheets, web casts, etc.