Health authorities are organizations or government agencies responsible for protecting and improving public health. They develop policies, provide guidelines, and implement programs to prevent disease and promote health within communities. Their work often includes monitoring health trends, conducting research, and responding to health emergencies. These authorities may operate at various levels, including local, regional, and national. Examples of health authorities include the Centers for Disease Control and Prevention (CDC) in the United States and the World Health Organization (WHO) globally. They collaborate with healthcare providers, researchers, and the public to ensure effective health management and education.