Fever, chills, pleuritic chest pain, productive cough
Fever is seen in 80%
Tachypnea
Most sensitive sign in elderly
Abdominal pain, nausea and vomiting, diarrhea may be seen with Legionella infection
Myalgia, fatigue
Fever is seen in 80%
Most sensitive sign in elderly
Pneumonia 
Pulmonary
Pleuritis
Airway obstruction
Atypical pneumonia
Anaphylaxis
Lung abscess
Angioedema