Respiratory Infections in South Asia

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. South Asia — home to nearly two billion people — contends with a dual burden of persistent infectious diseases alongside rapidly rising non-communicable conditions linked to urbanisation, dietary shifts, and air pollution. In South Asia, respiratory infections mortality falls near the global average, reflecting the region's ongoing epidemiological transition from communicable to non-communicable disease dominance.

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.

The mortality estimates presented on this page are derived from the Global Burden of Disease (GBD) study, produced by the Institute for Health Metrics and Evaluation (IHME). The GBD synthesizes data from vital registration systems, verbal autopsies, cancer registries, and surveillance networks across more than 200 countries and territories. Death rates are expressed per 100,000 population and are age-standardized, which adjusts for differences in age structure between populations so that comparisons across countries and over time reflect genuine differences in mortality risk rather than demographic composition.

The dataset typically covers the period from 1990 to 2023, although availability varies by country and cause. When interpreting the figures for respiratory infections in South Asia, note that higher age-standardized rates indicate a greater mortality burden independent of whether a country's population is older or younger. Trends over time reveal whether public health interventions, economic development, and health system improvements have reduced or increased the toll of this condition in the region.

The cause-of-death categories used on this page follow the Global Burden of Disease cause hierarchy, a standardized classification that groups individual ICD-coded causes into clinically meaningful categories. The "share of deaths" metric shows what percentage of all deaths in a given country or region are attributed to respiratory infections. A rising share does not necessarily mean more people are dying from this cause — it may reflect success in reducing competing causes of death. Always examine both absolute rates and shares for a complete picture of mortality patterns in South Asia.

Global Respiratory Infections All South Asia Data Global Explorer Compare Countries Respiratory Infections in East Asia & Pacific Respiratory Infections in Europe & Central Asia Respiratory Infections in Latin America & Caribbean