Global health security is the protection of global populations from health threats such as infectious diseases, bioterrorism, and pandemics. It emphasizes the need for coordinated international response mechanisms, early detection systems, and robust healthcare infrastructures to safeguard public health. The interconnectedness of today's world means that health risks can quickly spread across borders, making it crucial for nations to collaborate on research, surveillance, and preparedness efforts. Strengthening global health security requires investment in health systems, rapid response teams, and equitable access to medical resources and vaccines. By ensuring that all countries are equipped to handle health emergencies, we can reduce the risks of widespread disease outbreaks and create a healthier, more resilient global community.