Control of communicable diseases entails a comprehensive set of coordinated activities aimed at preventing transmission, reducing morbidity and mortality, limiting outbreaks, and ultimately eliminating or eradicating infectious agents where feasible. In disaster medicine, communicable disease control assumes heightened importance because disasters—whether natural, technological, or conflict-related—disrupt health systems, displace populations, compromise sanitation, and create overcrowded living conditions that facilitate the rapid spread of infections. Effective control therefore requires an integrated approach combining surveillance, prevention, preparedness, response, clinical management, and recovery strategies within the broader framework of public health and emergency management. At the core of communicable disease control lies an understanding of the epidemiological triad: agent, host, and environment. Control measures are directed at interrupting one or more components of this triad. Interventions may target the infectious agent through antimicrobial therapy or disinfection, the host through immunization or chemoprophylaxis, and the environment through sanitation, vector control, and safe water supply. In disaster settings, environmental disruption often shifts the balance in favor of disease transmission, making environmental and community-level interventions especially critical. Surveillance is a fundamental pillar of communicable disease control. It involves the systematic collection, analysis, interpretation, and dissemination of health data for action. In disaster medicine, rapid establishment or restoration of surveillance systems is essential to detect outbreaks early and guide timely interventions. This may include syndromic surveillance, laboratory-based reporting, and community-based surveillance. Early warning systems are particularly important in refugee camps and temporary shelters, where diseases such as acute diarrheal infections, measles, cholera, malaria, and respiratory infections can spread rapidly. Surveillance data inform risk assessment, resource allocation, and prioritization of control measures. Prevention strategies are categorized into primary, secondary, and tertiary levels. Primary prevention aims to prevent disease occurrence by reducing exposure or increasing resistance. Immunization programs are among the most effective tools for primary prevention. In disaster settings, mass vaccination campaigns, especially against measles, are often implemented to prevent outbreaks among displaced children. Provision of safe water, adequate sanitation, hand hygiene facilities, and proper waste disposal are essential preventive measures. Health education and risk communication also form part of primary prevention, empowering communities to adopt protective behaviors. Secondary prevention focuses on early detection and prompt treatment to halt disease progression and prevent further transmission. This includes screening, case finding, contact tracing, and isolation when necessary. Rapid diagnostic testing and laboratory confirmation play a key role in identifying causative agents and guiding appropriate treatment. In outbreaks of communicable diseases such as cholera or influenza, early identification and isolation of cases, combined with