Abstract

Armed conflict creates unique epidemiological conditions that intensify the emergence, transmission, and impact of 
infectious disease outbreaks. This review synthesizes evidence on the historical evolution, transmission dynamics, 
and public health challenges associated with war-related epidemics. Conflict settings alter disease patterns through 
mass population displacement, overcrowding, degradation of water, sanitation, and hygiene (WASH) 
infrastructure, collapse of governance, and disruption of routine health services, including vaccination. 
Surveillance and laboratory capacities are weakened, leading to delayed outbreak detection and distorted 
epidemiological visibility. Using a combination of epidemiological models, case studies from Nigeria, Syria, and 
other conflict zones, and documented humanitarian responses, the paper explores how conflict-driven 
determinants shape outbreak trajectories and complicate interventions. The findings highlight persistent 
operational barriers, including restricted access to affected populations, inadequate supply chains, and limited 
vaccination coverage in insecure regions. The review underscores the need for strengthened surveillance systems, 
coordinated humanitarian action, and resilient health systems capable of withstanding crisis-induced shocks. 
Ultimately, effective management of war-related infectious disease outbreaks hinges on integrating emergency 
response with long-term system recovery, governance reinforcement, and ethical humanitarian engagement.