The Infectious Disease Control Act establishes rules for how Icelandic society protects itself against infectious diseases, epidemics, and other health threats. The law authorizes authorities to implement various measures such as isolation, quarantine, gathering restrictions, travel limitations, and health screenings to prevent the spread of infectious diseases. It defines key concepts in disease control and provides clear guidelines on how to respond to serious diseases that may threaten individual health or cause significant disruption to societal infrastructure. The law covers both conventional infectious diseases and unexpected events that could have serious health consequences.