Disease transmission is influenced by a combination of host, agent, and environmental factors.
Host Factors Host factors include any characteristics of the individual that affect their susceptibility to disease, such as genetic predisposition, immune status, and existing health conditions.
Agent Factors Agent factors refer to the characteristics of the causative organism or substance, such as its virulence, infectious dose, and ability to survive in the environment.
Environmental Factors Environmental factors cover the external context in which the host and agent interact. This includes living conditions, sanitation, healthcare infrastructure, and social networks.
