Diagnosis and treatment of community acquired pneumonia - the German perspective -- Detection of respiratory bacterial pathogens -- Viral pathogens and epidemiology, detection, therapy and resistance -- Resistance in streptococcus pneumoniae -- Influenza -- Pathogenesis of chlamydophila pneumoniae infections - epidemiology, immunity, cell biology, virulence factors -- Legionnaires' disease and its agent legionella pneumophila -- Pathogenesis of streptococcus pneumoniae infections: adaptive immunity, innate immunity, cell biology, virulence factors -- Pathogenesis of mycoplasma pneumoniae infections: adaptive immunity, innate immunity, cell biology, and virulence factors -- Community-acquired pneumonia: paving the way towards new vaccination concepts.