Possible impacts of climate change on Health
Climate change affects human health both directly and indirectly. People are exposed directly to changing weather patterns (temperature, precipitation, sea-level rise and more frequent extreme events) and indirectly through changes in the quality of water, air and food, and changes in ecosystems, agriculture, industry, human settlements and the economy. These direct and indirect exposures can cause death, disability and suffering. Health problems increase vulnerability and reduce the capacity of individuals and groups to adapt to climate change.
The relationship between climate change and human health is multidimensional, as presented schematically in the diagram.
Potential Health Impact of Climate Change and Health
• Vector-borne, rodent-borne and other infectious diseases are likely to increase.
• Certain rodent-borne diseases are associated with flooding, including leptospirosis, tularemia and viral hemorrhagic diseases.
• Other diseases associated with rodents and ticks, and having associations with climatic variability like: Lyme disease, tick borne encephalitis, and hantavirus pulmonary syndrome.
• Vector-borne viral disease: Dengue and malaria are most like to increase.
• Visceral leishmaniasis (VL), also known as kala azar in this region, occurs in approximately 14 northern districts and is moving toward south
• Cholera and other diarrhoeal diseases are obvious risk in Bangladesh
• Many diarrhoeal diseases are climate sensitive
• Major causes of diarrhoea linked to heavy rainfall & contaminated water supplies are: cholera, cryptosporidium, E.coli infection, giardia, shigella,
typhoid, and viruses such as hepatitis A.
• Diseases like avian flue, NIPAH virus infections, unknown encephalitic diseases
• Morbidities associated with unintentional injuries stemming to natural calamities
• Drowning and near drowning.
• ARIs & Reparatory tract infections
• Heat stress related health problems
• Skin diseases
• Cardiovascular & stress related health problems
• Adverse impact on human reproductive system
• Psychological & social problems