Health security refers to the protection of individuals and communities from health threats, such as diseases, pandemics, and environmental hazards. It involves ensuring access to essential health services, vaccines, and medications, which help prevent and control outbreaks. By strengthening health systems, countries can better respond to emergencies and safeguard the well-being of their populations. A key aspect of health security is global cooperation, as health issues often cross borders. Organizations like the World Health Organization (WHO) play a vital role in coordinating responses to health crises and sharing information. By working together, nations can enhance their preparedness and resilience against potential health threats.