Respiratory Infections
Global mortality data, country rankings, and trends for Respiratory Infections from 1990 to 2021.
| # | Country | Share (%) | Region |
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Respiratory infections including pneumonia, influenza, and other acute lower respiratory infections remain among the leading causes of death, disproportionately affecting children under five and elderly populations. Note: From 2020 onward, this category includes COVID-19 deaths, which caused a dramatic spike in respiratory infection mortality worldwide. Access to vaccines, antibiotics, and basic healthcare infrastructure are key determinants of mortality patterns.
This data is sourced from the Institute for Health Metrics and Evaluation (IHME) Global Burden of Disease Study 2023, processed via Our World in Data. Values represent each cause's share of total deaths (%) unless otherwise noted. Explore related mortality data using the links below.
Lower respiratory infections (LRIs) — including pneumonia, bronchiolitis, and influenza — remain a leading infectious cause of death globally, killing over 2.5 million people each year. Pneumonia alone is the single largest infectious killer of children under five, claiming approximately 700,000 young lives annually. The elderly are also highly vulnerable: pneumonia mortality rates increase sharply above age 70. Key pathogens include Streptococcus pneumoniae, Haemophilus influenzae type b, respiratory syncytial virus (RSV), and influenza viruses. Risk factors include malnutrition, indoor air pollution, crowded living conditions, immunosuppression (HIV, diabetes), and lack of vaccination. Sub-Saharan Africa and South Asia account for the majority of LRI deaths, driven by limited access to antibiotics, oxygen therapy, and hospital care. Seasonal influenza alone causes 290,000-650,000 respiratory deaths annually worldwide, with periodic pandemics causing dramatically higher tolls.
Across 210 countries, respiratory infections accounts for an average of 5.0% of total deaths. Regional disparities are substantial: Sub-Saharan Africa has the highest regional average at 7.9%, while North America records the lowest at 2.6% — a 3.1-fold difference that underscores the geographic inequality in respiratory infections mortality burden.
Pneumococcal conjugate vaccines (PCV) and Hib vaccines have dramatically reduced bacterial pneumonia mortality in children where widely deployed. Annual influenza vaccination protects high-risk populations. RSV vaccines and monoclonal antibodies (nirsevimab) are newly available for infants. Improved nutrition, exclusive breastfeeding for the first six months, reduced indoor air pollution, and handwashing are proven to lower LRI incidence. Access to oxygen therapy, pulse oximetry, and appropriate antibiotics at the primary care level is critical for reducing case fatality in low-resource settings.