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The burden of pneumonia in children: an Asian perspective
1Lady Hardinge Medical College, Associated K S Children's Hospital, Bangla Sahib Lane, New Delhi, India. vsingh@ndf.vsnl.net.in
Insights
Pneumonia is a major cause of child deaths globally, particularly in Africa and Asia. Improved diagnostic tools are needed to better manage childhood pneumonia and reduce mortality rates.
Area of Science:
- Pediatrics
- Infectious Diseases
- Public Health
Background:
- Pneumonia causes 2 million child deaths annually, predominantly in Africa and Southeast Asia.
- Incidence rates in Africa and Asia are 2-10 times higher than in the USA.
- Challenges include resource constraints, overburdened health systems, and inconsistent pneumonia definitions.
Purpose of the Study:
- To highlight the significant global burden of childhood pneumonia.
- To identify key risk factors and common causative pathogens.
- To emphasize the need for improved diagnostic algorithms and preventive strategies.
Main Methods:
- Review of existing data on pneumonia incidence, mortality, and risk factors.
- Analysis of standard case management protocols for acute respiratory infections (ARIs).
- Identification of major etiological agents and contributing environmental/nutritional factors.
Main Results:
- Streptococcus pneumoniae, Haemophilus influenzae, and various viruses are primary pathogens.
- Risk factors include low birth weight, malnutrition, vitamin A and zinc deficiencies, lack of breastfeeding, air pollution, and overcrowding.
- Measles infection exacerbates pneumonia morbidity and mortality.
Conclusions:
- Current ARI management protocols have reduced disease burden but require enhancement for accurate pneumonia diagnosis, especially with wheezing.
- Further research is essential for developing effective and affordable pneumonia prevention strategies.
- Addressing risk factors and improving diagnostic capabilities are crucial for reducing childhood pneumonia deaths.
Abstract:
Pneumonia results in two million deaths each year among children worldwide (20% of all child deaths), 70% of them in Africa and South-east Asia. Most countries in Africa and Asia record 2-10 times more children with pneumonia (7-40/100 annually) than in the USA. Apart from resource constraints and an overburdened health system, there is lack of uniformity in defining pneumonia. Most nations employ a WHO standard case management protocol using age-specific cut-offs for increased respiratory rates and chest in-drawing for a clinical definition of pneumonia. The limited data available on the causative organisms have identified Streptococcus pneumoniae, Haemophilus influenzae and viruses such as respiratory syncytial virus (RSV), influenza, para influenza and adenoviruses as the major pathogens. Measles infection increases pneumonia morbidity and mortality. Low birth weight, under-nutrition, hypovitaminosis A, zinc deficiency, lack of breastfeeding, air pollution (including environmental tobacco smoke) and over-crowding increase the risk for pneumonias in children. Standard case management protocols used for acute respiratory infections (ARIs) in these countries have brought down the disease burden but an improvement in the diagnostic algorithm is needed to appropriately recognise those with associated wheeze. Research is needed to find effective and affordable preventive strategies.
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