The Centers for Disease Control (CDC) responds to inquiries from general public and health care professionals on research conducted by the CDC in the areas of environmental health, infectious diseases, health promotion and education, prevention services and occupational safety and health. Callers and mail are referred to the appropriate CDC Center, Institute or Office and to other federal, state and/or private institutions.

The National Health Information Center (NHIC) was established in 1979 to help both professionals and the general public locate health information through identification of health information resources, an information and referral system, and publications. Utilizing a database which contains descriptions of health-related organizations, the NHIC staff refer inquiries to the most appropriate resource. Where appropriate, a direct answer is provided, primarily to requests for the names and addresses of organizations, publication ordering information, inquiries regarding the NHIC, or inquiries for which the staff has no database referral resource. A core collection of health reference materials, journals, newsletters, and educational materials is available for use by the public; advance arrangements are recommended. Search by Alpha or .

Merck is a global, research-driven pharmaceutical company which discovers, develops, manufactures and markets a broad range of innovative products to improve human health. The Merck Manual is a textbook of medicine widely used by health care professionals. The online resource is based on the information provided in the hard-cover manual and transforms the language of the professionals' version into commonly used English while retaining the vital information about diseases, diagnosis, prevention, and treatment.

Established health, science and medical journals provide you with the most original, researched and up-to-date studies in the world. This directory provides links to established Web-based scholarly journals that offer some access to article files. A page describing selection criteria for most journals is available. You may browse by using an Index of specific areas in health, science and medicine or by Key Letter.

Directory of links to health sources including general daily and weekly health news, major online newspapers, news wires, health search engines, health policy magazines and related journals, health administration, health benefits, health promotion, injury/risk managment, health law, managed care, public health, health safety and other supplemental journals.