Age-standardized death from lower respiratory tract infections per 100,000 inhabitants in 2004.<unk>  is a common respiratory infection, affecting approximately 450 million people a year and occurring in all parts of the world. It is a major cause of death among all age groups, resulting in 1.4 million deaths in 2010 (7% of the world's yearly total) and 3.0 million deaths in 2016 (the 4th leading cause of death in the world). There are various causes of<unk>  including bacteria, viruses, and fungi.<unk>  can be acquired from different sources such as in hospitals, the community, or through use of ventilators.<unk>  is a type of lower respiratory tract infection, and is also the most deadly communicable disease as of 2016. Rates are greatest in children less than five and adults older than 75 years of age. It occurs about five times more frequently in the developing world versus the developed world. South Asia and Sub-Saharan Africa have the highest prevalence of<unk>  in the world. We can prevent and treat<unk>  through vaccines, proper treatments, and healthy practices.
Epidemiology of pneumonia
Bacterial phylodynamics
Classification of pneumonia
Epidemiology of motor vehicle collisions
Epidemiology of bed bugs
Vaccine efficacy
Public health surveillance
Epidemiology of measles