Climate change reshaping disease patterns, straining health systems: report, PgII

Key Highlights:

• A new report indicates that climate change is a significant public health threat in India, impacting disease patterns and straining healthcare systems.
• Nearly 40% of Indian districts are at high risk from extreme weather events like floods, heatwaves, and cyclones.
• Climate change is expanding the range of vector-borne diseases such as dengue and malaria into previously unaffected regions like Shimla and parts of Jammu & Kashmir.
• Extreme heat led to an estimated 160 billion labour hours lost in India in 2021.
• Exposure to extreme heat is linked to a 16% increase in the odds of preterm birth during heatwaves.

Detailed Insights:

• Climate change acts as a "health-risk multiplier," increasing both disease burden and pressure on healthcare systems, with floods causing water-borne diseases and heatwaves leading to heatstroke.
• Vulnerable communities, including rural populations, informal workers, women, and children, face the greatest risks due to their limited capacity to cope with climate shocks.
• Air pollution, particularly PM2.5, is associated with hypertensive disorders in pregnancy, such as pre-eclampsia, and increased gestational blood pressure.
• Climate disasters disrupt access to healthcare by damaging hospitals, cutting off roads, and interrupting the supply of medicines and vaccines, especially in remote areas.
• Initiatives like the National Action Plan on Climate Change and Human Health and State-level action plans are shaping local responses, including the implementation of Heat Action Plans.
• Challenges include a lack of local data linking climate events to health outcomes, constrained funding for adaptation, and weak public awareness hindering effective responses.

Key Concepts Involved:

• Climate Change: Long-term shifts in temperatures and weather patterns, primarily caused by human activities.
• Vector-borne Diseases: Illnesses transmitted by insects or other arthropods, such as mosquitoes and ticks.
• PM2.5: Fine particulate matter with a diameter of 2.5 micrometers or less, a major air pollutant.