2024-03-02-世界卫生组织-HECA_-_Newsletter_January-February_2024_7页_173kb

Children's Environmental Health International Initiatives Summary

Core Content

This document compiles recent international initiatives, news, and research related to children's environmental health. It highlights the impact of air pollution, chemicals, climate change, and other environmental factors on child health, with a focus on vulnerable populations and the need for improved policy and public health measures.

Main Themes and Key Information

Air Pollution

• Mozambique Study: A time-series analysis found that a 10 µg/m³ increase in fire-originated PM₂.₅ was linked to a 6.12% rise in all-cause and a 12.43% rise in respiratory-linked hospital visits among children.
• India Study: High PM₂.₅ levels are widespread in India, with rural and impoverished families facing greater exposure. Socio-environmental factors significantly influence respiratory illness in children under 5.
• Bangladesh Dengue Outbreak: Climate change has intensified dengue, which is now the deadliest mosquito-borne disease in Bangladesh, with 1,705 deaths reported in 2023, including 113 children.
• Ukraine Displacement Crisis: Children in frontline areas have spent up to 5,000 hours sheltering underground due to war, severely impacting mental health and education.
• U.S. Air Pollution Standards: The EPA announced stricter air quality standards targeting fine particulate matter, emphasizing the health risks to children and vulnerable communities.
• New York City Air Quality: PM₂.₅ in NYC has become more organic due to reduced inorganic pollutants, with 76% of organic aerosols forming in the atmosphere.

Chemicals and Toxins

• PFAS Contamination in North Carolina: UN experts condemned DuPont and Chemours for contaminating the lower Cape Fear River with PFAS, which are known as "forever chemicals" due to their persistence and health risks.
• ECHO Program Study: Prenatal exposure to organophosphate ester flame retardants was associated with preterm birth and fetal growth issues, with effect modification by sex.
• South Africa Study: Children in agricultural areas showed high exposure to OP and PYR insecticides, with 21% of urine biomarker levels exceeding health-risk thresholds.
• Argentina Pesticide Study: Prenatal pesticide exposure correlated with genotoxic effects and congenital abnormalities, particularly in children with genitourinary anomalies.
• Thirdhand Smoke: Toxic residues from tobacco linger on surfaces and pose a risk to children, with nicotine and carcinogens detected in all tested homes.

Climate Change

• Systematic Review on Climate and Child Health: Children are more vulnerable to climate-related health threats, with temperature extremes being the strongest risk factor for preterm birth. Protective factors include economic stability, access to healthcare, and food security.
• Central America Climate Impact: Climate change is causing extreme weather, arbovirus spread, and food shortages, particularly affecting children and families in the region.

Water, Sanitation, and Hygiene

• Floods and Pregnancy Loss: A study found that flood exposure during pregnancy increases the risk of pregnancy loss, especially for women outside the peak reproductive age range or during mid and late stages of pregnancy. Surface water dependence and lower income/education levels exacerbate this risk.
• Global Impact: Flood events may be responsible for 107,888 excess pregnancy losses annually in 33 developing countries, with a consistent upward trend from 2010 to 2020.

Reproductive Health

• DDT and DDE Study: Prenatal exposure to DDT and its metabolite DDE is associated with altered sperm epigenomes, potentially affecting future generations through epigenetic mechanisms.

Events and Initiatives

• Second Global Conference on Air Pollution and Health: Scheduled for 28 October – 1 November 2024 in Accra, Ghana.
• Boston Children's Hospital - Healthy Homes Grand Rounds: A webinar series for healthcare professionals, offering insights on environmental health and strategies for child biomonitoring.

Conclusion

The document underscores the significant and multifaceted threats to children's health from environmental factors, including air pollution, toxic chemicals, climate change, and poor water and sanitation conditions. It calls for enhanced monitoring, stricter regulations, and global cooperation to mitigate these risks and protect child health.