In children, most deaths (over two million a year) occur in the newborn period. According to a World Health Organization estimate, one in three newborn deaths result from pneumonia. Mortality decreases with age until late adulthood, with the elderly at risk for CAP and its associated mortality. More CAP cases occur during the winter than at other times of the year. CAP is more common in males than females, and more common in black people than Caucasians. Patients with underlying illnesses (such as Alzheimers disease, cystic fibrosis, COPD, tobacco smoking, alcoholism or immune-system problems) have an increased risk of developing pneumonia. See also
Bacterial pneumonia
Viral pneumonia
Fungal pneumonia
Parasitic pneumonia

References
Mandell LA, Wunderink RG, Anzueto A,  et al. (March 2007). "Infectious Diseases Society of America/American Thoracic Society consensus guidelines on the management of community-acquired pneumonia in adults". Clinical Infectious Diseases. 44 (Suppl 2): S27–72. doi:10.1086/511159. PMID 17278083. External links
Infectious Diseases Society of America/American Thoracic Society Consensus Guidelines on the Management of Community-Acquired Pneumonia in Adults PDF
Host Disease (GvHD) After Bone Marrow  (REACH3)" at ClinicalTrials.gov
Clinical trial number NCT03745638 for "TRuE AD1 - An Efficacy and Safety Study of Ruxolitinib Cream in Adolescents and Adults With Atopic Dermatitis" at ClinicalTrials.gov
Clinical trial number NCT03745651 for "TRuE AD2 - An Efficacy and Safety Study of Ruxolitinib Cream in Adolescents and Adults With Atopic Dermatitis" at ClinicalTrials.gov