Vector Borne Diseases

These diseases are caused by pathogens transmitted through vectors rather than by direct person-to-person spread. The grounding also links emergence and re-emergence to interactions among pathogens, hosts, and the environment, as well as social and demographic factors such as urbanization, globalization, trade, travel, and close interactions with livestock. Climate change is also supported as a contributor through altered temperature, humidity, rainfall, and vector distribution.

The disease process depends on transmission by vectors and on complex interactions among the pathogen, the vector, and the host immune response. The literature highlights vector saliva, pathogen immune evasion, and host immunomodulation as important biological features. Environmental change can alter vector activity, distribution, and diversity, which in turn affects transmission dynamics.

Supported risk factors include climate change and rising temperatures, which can expand or intensify vector activity and distribution. Social and demographic factors such as urbanization, globalization, trade, travel, population growth, and close contact with livestock are also linked to emergence and re-emergence. The burden is noted to be especially high in socioeconomically disadvantaged regions.

The principal control strategy described in the grounding is vector control, including environmental management and insecticide-based tools. The literature also mentions surveillance, early warning systems, weather-linked predictive models, and robust vector control strategies as important public health measures. Review material additionally notes drug therapy and immunological approaches, including host-directed immunotherapies and monoclonal antibodies, but does not support a single disease-wide drug-class standard of care.