Public health information can help you understand health risks, find official guidance, and learn where to ask questions in your community. Use the sources below for current information. Check the date on any page or announcement you read. Recommendations can change as new evidence becomes available.
Centers for Disease Control and Prevention
The Centers for Disease Control and Prevention, commonly called the CDC, provides nationwide information about preventing and managing diseases and injuries. Its resources cover vaccines, infectious diseases, chronic conditions, environmental health, travel health, emergency preparedness, and health statistics.
The CDC can help when you want evidence-based guidance about a health issue affecting many communities. It also publishes updates during outbreaks and other public health events. Some recommendations are written for the general public. Others are intended for health professionals or specific groups, so check the intended audience and publication date.
Your state health department
Your state health department shares public health information and guidance for people across the state. It may provide updates about infectious disease activity, vaccination recommendations, health advisories, emergency preparedness, food and water safety, and other statewide concerns.
State health departments also commonly explain public health programs, reporting requirements, and eligibility rules that may differ from those in other parts of the country. Use this source to see how broader national guidance applies in your state. It can also provide official announcements during a public health event.
Your county health department
Your county health department is a local source for information about conditions and programs in your area. It may publish local alerts, community health notices, vaccination or testing information, food safety updates, and details about other public health programs.
Local guidance can reflect conditions that do not appear in national or statewide summaries. County health department information may also explain local requirements, operating hours, eligibility, or ways to contact a relevant public health office. Availability and services vary by location. Confirm details directly with the appropriate local department.
MedlinePlus
MedlinePlus is a consumer health information resource from the National Library of Medicine. It offers plain-language information about diseases and conditions, medicines and supplements, medical tests, health and wellness, and selected health topics in Spanish.
MedlinePlus can help you learn basic facts and prepare questions for a qualified health professional. Its information may help you compare explanations from government and medical sources. It is not a substitute for individualized medical advice, diagnosis, or emergency care.