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HOST FACTORS AND RISK
FACTORS OF ACUTE
RESPIRATORY
INFECTIONS
- BY : DEEPIKA CHIVUKULA
INTRODUCTION
• Acute respiratory infections (ARIs), a group of diseases that
includes pneumonia, influenza, and respiratory syncytial virus
(RSV), result in 4.25 million deaths worldwide every year.
• ARIs are also the leading cause of illness in children and their
leading killer.
• Acute respiratory infections cause at least six percent of the
disability and death around the globe, affecting the most
vulnerable populations, especially the young, the old, the
ailing, and the poor.
RISK FACTORS
• Although bacteria and viruses are the immediate causes of most acute
respiratory infections, malnutrition, air pollution, smoking, and overcrowding
are the underlying drivers of vulnerability.
• Australian studies have identified that gender, maternal education, exposure to
childcare, preschool, family income, and private health insurance coverage have
an association with ARI amongst children.
• Malnutrition – mucous membranes and other mechanical
structures designed to keep the respiratory tract intact are
impaired.
• In developing countries of Africa and Asia more than one quarter
of childhood deaths due to ARI’s is associated with malnutrition.
• Air Pollution - The body’s innate and acquired immune
systems are damaged by long term exposure to pollutants like
ozone, sulphur dioxide.
• Smoking – As tobacco burns, it releases vaporized chemicals
that penetrate normally sterile air sacs of the lungs and depress th
epathogen fighting capacity of white blood cells.
• Tobacco use is associated with 2,41,000 deaths from ARI’s annually
• Overcrowding – In combination with poor ventilation, poor
sanitation, and other toxic effects of poverty, pathogens spread
rapidly in overcrowded areas.
• According to a research in Sao Paulo, if 4 or more children share a
bedroom they are 2.5 times more likely to have ARI’s.

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Acute respiratory infection

  • 1. HOST FACTORS AND RISK FACTORS OF ACUTE RESPIRATORY INFECTIONS - BY : DEEPIKA CHIVUKULA
  • 2. INTRODUCTION • Acute respiratory infections (ARIs), a group of diseases that includes pneumonia, influenza, and respiratory syncytial virus (RSV), result in 4.25 million deaths worldwide every year. • ARIs are also the leading cause of illness in children and their leading killer. • Acute respiratory infections cause at least six percent of the disability and death around the globe, affecting the most vulnerable populations, especially the young, the old, the ailing, and the poor.
  • 3.
  • 4. RISK FACTORS • Although bacteria and viruses are the immediate causes of most acute respiratory infections, malnutrition, air pollution, smoking, and overcrowding are the underlying drivers of vulnerability. • Australian studies have identified that gender, maternal education, exposure to childcare, preschool, family income, and private health insurance coverage have an association with ARI amongst children.
  • 5. • Malnutrition – mucous membranes and other mechanical structures designed to keep the respiratory tract intact are impaired. • In developing countries of Africa and Asia more than one quarter of childhood deaths due to ARI’s is associated with malnutrition.
  • 6.
  • 7. • Air Pollution - The body’s innate and acquired immune systems are damaged by long term exposure to pollutants like ozone, sulphur dioxide.
  • 8. • Smoking – As tobacco burns, it releases vaporized chemicals that penetrate normally sterile air sacs of the lungs and depress th epathogen fighting capacity of white blood cells. • Tobacco use is associated with 2,41,000 deaths from ARI’s annually
  • 9.
  • 10. • Overcrowding – In combination with poor ventilation, poor sanitation, and other toxic effects of poverty, pathogens spread rapidly in overcrowded areas. • According to a research in Sao Paulo, if 4 or more children share a bedroom they are 2.5 times more likely to have ARI’s.