WHAT IS PLANETARY HEALTH?
Illnesses caused by infections by microorganisms like bacteria, viruses, fungi, or parasites are increasing in spread and severity due to environmental changes.
The rise of infectious diseases is exacerbated by global anthropogenic environmental changes, which are deeply intertwined with socioeconomic and ecological factors. Biodiversity loss, climate change, chemical pollution, and the introduction of non-native species are linked to increases in infectious disease-related outcomes.
Climate change, combined with global mobility and urbanization, is significantly influencing the distribution of vector-borne, food-borne, and water-borne diseases. For instance, dengue virus infections have doubled every decade since 1990, with other mosquito-borne diseases like chikungunya and Zika experiencing similar trends. These vector-borne diseases are particularly sensitive to environmental changes, with human activities such as urban expansion, infrastructure development, and agriculture serving as key predictors of their occurrence.
Deforestation has also been linked to the increase in the spread of mosquito-borne diseases. Warm, partially shaded pools that form beside roads seeping into forests, and puddles behind debris where water is no longer absorbed by trees, provide optimal breeding grounds for these mosquitoes.
The distribution of malaria-carrying mosquitoes has shifted substantially. Anopheles mosquitoes have expanded their range over the past century, moving over 500 kilometers southward and 700 meters up in altitude, driven by changes in rainfall, temperature, and humidity.
Bacterial infections are also becoming more prevalent due to climate change, deforestation, and pollution. Vibrio bacteria, found in coastal waters, are thriving under conditions shaped by rising sea temperatures and altered salinity levels. These bacteria can cause severe illnesses, ranging from gastroenteritis to life-threatening cholera and sepsis.
Addressing these challenges requires comprehensive strategies that tackle their root causes. Reducing greenhouse gas emissions, maintaining healthy ecosystems, preventing the spread of invasive species, and conserving biodiversity are essential measures to lower disease risks. When combined with efforts to improve social and economic conditions, these actions can significantly mitigate the growing burden of infectious diseases.
Infectious Diseases Climate Change
The study examines how temperature changes have impacted dengue transmission risk across Nepal from 2001 to 2020.
• Research & Reports
Infectious Diseases Biodiversity Loss
• News
Infectious Diseases Biodiversity Loss
Armadillo hunting plays a significant role in human leprosy transmission. Solutions are proposed to mitigate future outbreaks in tropical regions facing rapid environmental change and persistent poverty.
• Research & Reports
Infectious Diseases Noncommunicable Diseases
Climate change is accelerating the global spread of the deadly fungus Aspergillus, which infects millions of people annually. Rising temperatures could expose millions more to infections, especially the immunocompromised, threatening human health and food security.
• News
Infectious Diseases Climate Change
Researchers from the Revitalising Informal Settlements and their Environments (RISE) program reveal a “perfect storm” of health risks currently at play in urban informal settlements.
• Research & Reports
