Describe the relationship between deforestation and the emergence of infectious diseases.
In short
Deforestation drives infectious disease by pushing wildlife towards people, eroding the biodiversity that regulates pathogens, letting vectors like mosquitoes spread, and favouring rodent reservoirs at forest edges. Nipah spread from displaced fruit bats in Malaysia, and Andhra Pradesh's forest-fringe districts have seen more dengue, malaria and scrub typhus.
Model answer
Ghissu Editorial · Verified 4 Oct 2026 · 277 words
Habitat Disruption Increases Spillover
Fragmentation in Andhra Pradesh’s Eastern Ghats forces wildlife closer to humans, raising zoonotic risks. This proximity increases encounters with disease reservoirs such as bats and primates.
Vector Expansion and Host Shifts
Deforestation enables mosquitoes and ticks to invade new areas, increasing malaria and dengue in Andhra Pradesh; defaunation shifts reservoirs to rodents. The altered habitats create breeding grounds for vectors, intensifying disease spread.
Livestock as Transmission Bridges
Domestic animals near degraded forests in Andhra Pradesh facilitate pathogen transfer from wildlife to humans. Mixed farming practices increase interfaces where zoonotic pathogens can jump species.
Nipah Virus and Habitat Loss
Malaysian deforestation pushed bats into human areas, causing Nipah outbreaks, illustrating zoonotic spillover from forest loss. This case highlights how agricultural expansion near forests can trigger pandemics.
Vector-Borne Disease Rise in Andhra Pradesh
Increased dengue and malaria in forest-fringe districts correlate with deforestation and fragmentation. The state’s health reports confirm rising incidence linked to ecological changes.
Strengthen Forest Conservation
Enforce laws and community management in Andhra Pradesh to reduce habitat loss and spillover. Initiatives like Joint Forest Management can empower local communities in conservation efforts.
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